STIHL TS 510

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Main Parts of the TS 350 CutquikTM             2    Starting                           20   This Manual contains operating and
Definitions                                    3    Checking Spark Plug                22   safety instructions for your STIHL
Safety precautions                             4    General Notes on Operation         22   TS 350 CutquikTM
The operator                                   4    Air filter                         23   Pay special attention to the safety
- The cut-off machine                          6    Adjusting Carburetor               24   precautions outlined on pages 4 to 14.
- The use of the cut-off machine               7    Motor Management                   24   Allow only persons who understand this
- Maintenance, repair and storing                   Rewind Starter                     25   Manual to operate your cut-off machine.
  of the cut-off machine                       13   Changing the V-belt                27   To receive maximum performance and
Storing the Machine                            14   STIHL CutquikTM Cart               28   satisfaction from your STIHL cut-off ma-
Mounting the Arbor Bearing                          Spark arresting screen                  chine, it is important that you read and
and Guard                                      15   in the muffler                     28   understand the maintenance and
Tensioning the V-belt                          16   Maintenance chart                  29   safety precautions before using your
Abrasive Wheels                                17   Specifications                     30   cut-off machine. Contact your STIHL
Limiting Adjustment on                              Andreas Stihl Limited Warranty          dealer or the STIHL distributor for your
Abrasive Wheel Guard                           17   Federal Emission Control Systems        area if you do not understand any of the
Mounting the Abrasive Wheel                    18   Utility Engines                    31   instructions in this Manual.
Fuel mix                                       19                                           Because a cut-off machine is a high-
Fueling                                        19                                           speed cutting tool, some special safety
                                                                                            precautions must be observed as with
                                                                                            any other cut-off machine to reduce the
                                                                                            risk of personal injury. Careless or
                                                                                            improper use may cause serious or
                                                                                            even fatal injury.
                                                                                            STlHL’s philosophy is to continually
                                                                                            improve all of its products. As a result,
                                                                                            engineering changes and improvements
                                                                                            are made from time-to-time.
                                                                                            If the operating characteristics or the
                                                                                            appearance of your cut-off machine
                                                                                            differs from those described in this
                                                                                            Manual, please contact your STIHL
                                                                                            dealer for information and assistance.

Printed on chlorine-free paper.
Printing inks contain vegetable oils,
paper is recyclable

 1999 Andreas Stihl AG & Co, Waiblingen
0458 330 3021. M6. H9. T. Printed in Germany


76                                                                                                                               
Main Parts of the TS 350 CutquikTM




2                                    TS 350
'HILQLWLRQV


 $EUDVLYH :KHHO                            7KUXVW :DVKHU                            7KURWWOH 7ULJJHU ,QWHUORFN
   Can either be an abrasive wheel              Distributes claming pressure of              Must be depressed before activating
   or a diamond abrasive wheel.                 mounting nut evenly over abrasive wheel.     the throttle trigger.


  :KHHO *XDUG                              6WDUWHU *ULS                               6WDUWLQJ 7KURWWOH /RFN
    Guards the wheel and deflects sparks.      The grip of the pull starter                   Keeps the throttle partially open
                                               which is the device to start the engine.       during starting.

 $GMXVWLQJ /HYHU RI :KHHO *XDUG
   For adjusting the wheel guard in a        6WRS 6ZLWFK                                (FFHQWULF $GMXVWHU
   way that the beam of sparks is              Switches the engine’s ignition system          For tensioning the V-belt.
   directed away from the operator             off and stops the engine.
   and the machine.
                                                                                              &OXWFK
                                             )XHO )LOOHU &DS                              Couples engine to the V-belt pulley
 )URQW +DQGOH                                For closing the fuel tank.                    when engine is accelerated beyond
   Handle bar for the left hand                 (Fits on fuel filler neck).                   idle speed.
   at front of cut-off machine.                                                               (Not illustrated)

                                             :LQJ 1XWV RI )LOWHU &RYHU
 0XIIOHU                                     For removing filter cover to permit           9%HOW 3XOOH\
   Reduces engine exhaust noise                 filter to be cleaned.                         The wheel that drives the V-belt
   and directs the exhaustgases                                                               and the abrasive wheel.
                                                                                              (Not illustrated)
                                             $LU )LOWHU
 6SDUN 3OXJ %RRW                             Prevents dust and foreign
   Connects the spark plug                      matter from entering the carburetor.
   with the ignition wire.                      (Not illustrated)


 5HDU +DQGOH                              &KRNH /HYHU
   The support handle for the right hand,       A control used when starting cold
   located at or toward the rear of the         engine
   cut-off machine.

                                             7KURWWOH 7ULJJHU                         1RWH
                                                Controls the speed of the engine.         Different models may have different
                                                                                          parts and controls.

76                                                                                                                             
6DIHW\ 3UHFDXWLRQV


               The use of any cut-off         in this manual. Employers should estab-
               machine may be                 lish a training program for operators of             :DUQLQJ
               hazardous. Because a           gasoline powered, hand held portable,         Prolonged use of cut-off machines (or
               cut-off machine is a           cutt-off machines to assure safe oper-        other machines) exposing the operator
               high-speed, fast-cutting       ation of these machines. These safety         to vibrations may produce whitefinger
power tool, special safety precautions        precautions and warnings apply to the         disease (Raynaud’s phenomenon) or
must be observed to reduce the risk of        use of all STIHL CutquiksTM.                  carpal tunnel syndrome. These
personal injury and fire.                                                                   conditions reduce the hand’s ability to
                                              Different models may have different           feel and regulate temperature, produces
It is important that you read, fully under-   parts and controls. See the appropriate       numbness and burning sensations and
stand and observe the following safety        section of your owner’s manual for a          cause nerve and circulation damage and
precautions and warnings.                     description of the controls and function      tissue necrosis. All factors which contri-
                                              of the parts of your model cut-off            bute to whitefinger disease are not
               Read the Owner’s               machine.                                      known, but cold weather, smoking and
               Manual and the safety                                                        diseases or physical conditions that
               instructions periodically.     Safe use of a cut-off machine involves        affect blood vessels and blood transport,
                                              - the operator                                as well as high vibration levels and long
                                              - the cut-off machine                         periods of exposure to vibration are
Careless or improper use of any               - the use of the cut-off machine.             mentioned as factors in the development
cut-off machine may cause serious or                                                        of whitefinger disease. In order to
fatal injury.                                                                               reduce the risk of whitefinger disease
Have your STIHL dealer show you               7+( 23(5$725                                  and carpal tunnel syndrome, please
how to operate your cut-off machine.                                                        note the following:
Observe all applicable local safety           3K\VLFDO &RQGLWLRQ
regulations, standards and ordinances.                                                      -   Most STIHL cut-off machine models
                                              You must be in good physical condition            are available with an anti-vibration
                                              and mental health and not under the               ("AV") system designed to reduce
       :DUQLQJ                                influence of any substance (drugs.                the transmission of vibrations
Minors should never be allowed to use a       alcohol, etc.) which might impair vision,         created by the engine to the
cut-off machine. Bystanders, especially       dexterity or judgement. Do not operate a          operator’s hands. An AV system is
children and animals should not be            cut-off machine when you are fatigued.            recommended for those persons
allowed in the area where a cut-off           Be alert - if you get tired while operating       using cut-off machines on a regular
machine is in use. Never let the cut-off      your cut-off machine, take a break, tired-        or sustained basis.
machine run unattended.                       ness may result in loss of control.           -   Wear gloves and keep your hands
                                              Working with any cut-off machine can be           warm.
Do not lend or rent your cut-off machine      strenuous. If you have any condition that     -   Keep the AV system well maintained.
without the Owner’s Manual. Be sure           might be aggravated by strenuous work,            A cut-off machine with loose
that anyone using your cut-off machine        check with your doctor before operating           components or with damaged or
understands the information contained         a cut-off machine.

                                                                                                                                  76
     worn AV buffers will tend to have        cotton or a tightly woven, heavier cotton   Always wear sound barriers (ear plugs
     higher vibration levels.                 such as denim. Some flame-retardant         or ear mufflers) to protect your hearing.
-    Maintain a firm grip at all times, but   synthetic fabrics are also suitable but     Regular users should have their hearing
     do not squeeze the handles with          others such as polyester, nylon, rayon      checked regularly.
     constant, excessive pressures, take      and acetate can melt during fire into a
     frequent breaks.                         tar-like matter that burns into the skin.
                                              Keep clothing free of oil, fuel, grease             :DUQLQJ
All the above mentioned precautions do        and other flammable substances.                                Use of this product to cut
not guarantee that you will not sustain                                                                      masonry, concrete, metal
whitefinger disease or carpal tunnel                         Protect your hands with                         and other materials can
syndrome. Therefore continual and                            gloves when handling the                        generate dust, mists and
regular users should monitor closely the                     cut-off machine.                                fumes containing
condition of their hands and fingers.                        Heavy-duty, nonslip          chemicals known to cause serious or
If any of the above symptoms appear,                         gloves improve your grip     fatal injury or illness, such as respiratory
seek medical advice immediately.                             and protect your hands.      disease, cancer, birth defects or other
                                                                                          reproductive harm. If you are unfamiliar
3URSHU &ORWKLQJ                                              Good footing is most im-     with the risks associated with the particu-
                Clothing must be sturdy                      portant in cut-off machine   lar material being cut, review the material
                and snug-fitting, but allow                  work.                        safety data sheet and/or consult your
                complete freedom of                          Wear sturdy boots with       employer, the material manufacturer/-
                movement. Avoid loose-                       nonslip soles. Steel-toed    supplier, governmental agencies such
                fitting jackets, scarfs,      safety boots are recommended.               as OSHA and NIOSH and other sources
neckties, jewelry, flared or cuffed pants,                                                on hazardous materials. California and
unconfined long hair or anything that               :DUQLQJ                               some other authorities, for instance,
could become caught on any obstacles          Loose objects may be thrown toward the      have published lists of substances
or moving parts of the unit. Wear over-       operator by the cutting tool.               known to cause cancer, reproductive
alls or long pants to protect your legs.                                                  toxicity, etc.
Do not wear shorts.                                         To reduce the risk of
                                                            injury to your eyes never     Control dust, mist and fumes at the
                                                            operate a cut-off machine     source where possible. In this regard
       :DUQLQJ                                              unless wearing goggles        use good work practices and follow the
When cutting metal, a cut-off machine                       or properly fitted safety     recommendations of the manufacturer/-
generates sparks which can ignite             glasses with adequate top and side          supplier, OSHA/NIOSH, and occupatio-
clothing. Most fabrics used in clothing       protection complying with ANSI Z 87.1.      nal and trade associations. A water
are flammable - even flame retardant          Proper eye protection is a must.            attachment kit is available for your cut-off
fabrics will ignite at higher temperatures.                                               machine and should be used for dust
To reduce the risk of burn injury STIHL       Wear an approved safety hard hat to         suppression when wet cutting is feasible.
recommends wearing clothing made of           protect your head. cut-off machine noise    When the inhalation of dust, mists and
leather, wool, flame-retardant treated        may damage your hearing.                    fumes cannot be eliminated, the operator

76                                                                                                                                   
and any bystanders should always wear          7+( &872)) 0$&+,1(                           Abrasive wheels for free-hand cutting
a respirator approved by NIOSH/MSHA                                                          are subjected to particularly high
for the material being cut.                    Parts of the cut-off machine, illustrations   bending and compressive stresses.
                                               and definitions of the parts see pages
                                               2 and 3.                                             :DUQLQJ
        :DUQLQJ                                                                              Unauthorized wheels may shatter or
Cutting masonry, concrete and other                                                          break. Use only STIHL wheels or other
materials with silica in their composition           :DUQLQJ                                 authorized wheels with approved RPM
may give off dust containing crystalline       Never modify a cut-off machine in any         ratings.
silica. Silica is a basic component of         way. Only attachments supplied by
sand, quartz, brick clay, granite and          STIHL or expressly approved by STIHL                        Inspect the abrasive
numerous other minerals and rocks.             for use with the specific STIHL cut-off                     wheel frequently and
Repeated and/or substantial inhalation         machine models are authorized.                              replace immediately if the
of airborne crystalline silica can cause       Although certain unauthorized attach-                       abrasive wheel is cracked
serious or fatal respiratory diseases,         ments are useable with the STIHL                            or warped. Cracked or
including silicosis. In addition, California   powerhead, their use may, in fact be          warped wheels may shatter or break
and some other authorities have listed         extremely dangerous.                          and cause serious personal injury.
respirable crystalline silica as a sub-
stance known to cause cancer. When                                                           Out-of-round or unbalanced abrasive
cutting such materials, always follow the              :DUQLQJ                               wheels increase vibration and reduce
respiratory precautions mentioned              Dust may collect on the powerhead,            the service life of the cut-off machine.
above.                                         especially around the carburetor and          Use STIHL wheels approved for this unit.
                                               may collect gasoline resulting in danger      Abrasive wheels are heat sensitive.
       :DUQLQJ                                 of fire. Clean dust from the powerhead
Breathing asbestos dust is dangerous           regularly.                                    Always store your cut-off machine in a
and can cause severe or fatal injury,                                                        place where the cutting wheel is not
respiratory illness or cancer. The use                                                       exposed to direct sunlight or other
and disposal of asbestos-containing            $EUDVLYH ZKHHOV                               sources of heat. Store spare cutting
products have been strictly regulated by                                                     wheels in a dry place where there is no
OSHA and the Environmental Protection                :DUQLQJ                                 risk of frost damage. Failure to follow
Agency. Do not use your cutting-off            Before assembling your cutting wheel          these directions may cause the wheel to
machine to cut or disturb asbestos,            make sure that the maximum operating          shatter or crack in use causing serious
asbestos-containing products, or pro-          wheel speed is above or equal to the          or fatal injury.
ducts such as pipes which are wrapped          spindle speed of your cut-off machine as
or covered with asbestos insulation. If        provided in the Specifications of this
you have any reason to believe that you        manual.
might be cutting asbestos, immediately
contact your employer or a local OSHA
representative.

                                                                                                                                    76
                                            'LDPRQG DEUDVLYH ZKHHOV                      7+( 86( 2) 7+( &872)) 0$&+,1(
       :DUQLQJ
Never use carbide-tipped, wood-cutting      Diamond abrasive wheels have a much          7UDQVSRUWLQJ WKH &XWTXLN70
or circular saw blades. They can cause      better cutting performance than the
severe personal injury from reactive        abrasive wheels. The wheels are steel               :DUQLQJ
forces, blade contact or thrown objects.    centered and diamond particles are           Always stop the engine before putting a
Your STIHL dealer stocks a range of         imbedded in their cutting edges.             cut-off machine down or carrying it. The
special abrasive wheels for the many                                                     abrasive wheel continues to rotate for a
applications of the cut-off machine.        They can be used for concrete, asphalt,      short while after the throttle trigger is
                                            natural stone, clay pipe, brick and the      released (flywheel effect). Carrying a
                                            like.                                        cut-off machine with the engine running
      :DUQLQJ                                                                            is extremly dangerous. Accidental
Use of the wrong abrasive wheel or          They are not suitable for cutting metal or   acceleration of the engine can cause the
material for which it was not designed      other materials.                             wheel to rotate. Avoid touching the hot
may cause that wheel to shatter causing                                                  muffler.
serious or fatal injury.                    Wet or dry cutting is possible. With wet
                                            cutting you get a longer life of your        By hand: When carrying your cut-off
Only use the abrasive wheel approved        wheel. Water attachments are available       machine by hand, the engine must be
for the type of material to be cut. There   for your STIHL cut-off machine.              stopped and the cut-off machine must
are different abrasive wheels each          See the appropriate section of your          be in the proper position. Grip the front
specially marked, for example:              owner’s manual.                              handle and place the muffler at the side
                                                                                         away from the body.
1.   Stone
     Also can be used for concrete,                :DUQLQJ
     masonary, reinforced concrete          Do not remount a used diamond                       :DUQLQJ
     and brick cutting.                     abrasive wheel without first inspecting      Always protect the cutting wheel from
2.   Steel                                  for under-cutting, flatness, core fatigue,   hitting the ground or any other objects.
     Can be used for all ferrous metal      segment damage or loss, signs of             Damaged wheels may shatter and
     cutting.                               overheating (discoloration) and possible     cause serious or fatal injury.
3.   Asphalt                                arbor hole damage.
     Also can be used for aggregate         Check the wheel for cracks and make          %\ YHKLFOH Properly secure your
     concrete cutting.                      sure that no pieces have broken off the      cut-off machine to prevent turnover, fuel
4.   Ductile iron                           wheel before use.                            spillage and damage to the cut-off
     Also can be used for certain grades                                                 machine.
     of cast iron (SG 17-24), bronze and    Always fit the wheel so that the arrow on
     copper cutting.                        the wheel points in direction of the         1HYHU WUDQVSRUW ZLWK FXWWLQJ ZKHHO
                                            rotation of the spindle.                     PRXQWHG
For cutting composite materials please
ask your STIHL dealer.

76                                                                                                                                   
A wheel damaged during transportation          make sure the hexagonal collar nuts for
may shatter during operation and cause         the cast arm are tightened securely.               :DUQLQJ
serious personal injury.                       Check V-belt tension after one hour of                    Gasoline is an extremely
                                               operation and correct if necessary.                       flammable fuel. If spilled or
                                                                                                         ignited by a spark or other
3UHSDUDWLRQ IRU WKH XVH RI WKH                                                                           ignition source, it can cause
FXWRII PDFKLQH                                       :DUQLQJ                                            fire and serious burn injury
                                               IRU 76  DQG 76  RQO\                 or property damage. Use extreme cau-
For assembly, follow the procedure             The STIHL TS 350 and TS 360                  tion when handling gasoline or fuel mix.
described at the appropriate section of        CutquikTM is supplied with a fuel filler     Do not smoke or bring any fire or flame
your owner’s manual.                           elbow connector to facilitate easier         near the fuel.
                                               refueling. Always keep the connector
Before operation of your cut-off machine       and fuel filler cap tightened and properly
be sure the controls (e.g. throttle trigger,   sealed. A loose or improperly seated         )XHOLQJ ,QVWUXFWLRQV
stop switch.) and the safety devices are       connector or cap may vibrate loose
working properly, the carburetor idle and      during operation causing fuel spillage       Fuel your cut-off machine in well-ventila-
maximum speed are correctly adjusted,          which may result in a fire which can         ted areas, outdoors only.
and the wheel guard is in place and            cause serious or fatal injury. Never         Always shut off the engine and allow it to
securely fastened to your unit.                operate the unit with a cracked, broken      cool before refueling. Relieve fuel tank
All wheels should be carefully inspected       or improperly seated or adjusted filler      pressure by loosening the fuel cap
for good condition before mounting.            neck. This could permit fuel leakage and     slowly.
                                               lead to fire. Do not fill tank above the
                Adjust the wheel guard so      threefourths level of the neck entry         Select bare ground for fueling and move
                that sparks, dust and cut      diameter into the tank. Do not fill tank     at least 10 feet (3 m) from fueling spot
                material are deflected         above the "max" line on the fuel filler      before starting the engine. Wipe off any
                away from the operator,        elbow. Overfilling reduces the room in       spilled fuel and check for leakage.
                and cannot reach               the tank for fuel expansion and may lead
flammable surroundings. See operating          to fuel spillage through the tank vent and
instructions of your owner’s manual.           risk of fire.                                        :DUQLQJ
                                                                                            If fuel gets spilled on clothes, especially
Never operate a cut-off machine that is        )XHOLQJ                                      trousers, it is very important to change
damaged, improperly adjusted or not            Your STIHL cut-off machine uses an           clothes immediately. Do not rely upon
completely and securely assembled.             oil-gasoline mixture for fuel (see chapter   evaporation. Flammable quantities of
Inspect for safety in operation.               "Fuel" of your owner’s manual).              fuel may remain on clothes after a spill
                                                                                            for longer than expected. Cutting metal
Proper tension of the V-belt is important.                                                  with cut-off machine when clothes are
In order to avoid a false setting the                                                       wet or damp from gasoline is extremely
tensioning procedure must be followed                                                       dangerous as the operator’s clothes
as described in your Manual. Always

                                                                                                                                    76
might catch fire and cause serious or                                                                 Do not allow the grip to snap back, but
fatal injury.                                                                                         guide the starter rope slowly back to
                                                                                                      permit the rope to rewind properly.
Always make sure that the fuel cap is                                                                 Failure to follow this procedure may
tightened securely. Check for fuel                                                                    result in injuries to hand or fingers and
leakage while refueling and during                                                                    may damage the starter mechanism.
operation. If a fuel leak is suspected,                                                               Always stop the engine and be sure the
do not start or run the engine until leak is                                                          wheel has stopped rotating before
fixed and spilled fuel has been wiped                                                                 setting down the cut-off machine.
away.

                                                                                                      :RUNLQJ &RQGLWLRQV
      :DUQLQJ
                 Unit vibrations can                                                                  Operate the cut-off machine under good
                 cause an improperly                                                                  visibility and daylight conditions only.




                                                                                        002BA058 KN
                 tightened fuel cap to
                 loosen or come off and
                 spill quantities of fuel.                                                                   :DUQLQJ
                                                                                                                     Your cut-off machine
In order to reduce risk of fuel spillage                                                                             produces poisonous
and fire, tighten fuel cap by hand with as     Do not drop start. This method is very                                exhaust fumes as soon
much force as possible.                        dangerous because you may loose                                       as the combustible
The screw driver end of the STIHL              control of the cut-off machine.                                       engine is running. These
combination wrench or other similar tool       Place the cut-off machine on firm ground               gases (e.g. carbon monoxide) may be
can be used as an aid in tightening            or other solid surface in an open area.                colorless and odorless.
slotted fuel caps.
                                               Maintain a good balance and secure                     To reduce the risk of serious or fatal
                                               footing. Be absolutely sure that the                   injury from breathing toxic fumes, never
6WDUWLQJ                                       cutting wheel is clear of you and all other            run the cut-off machine indoors or in
                                               obstructions and objects, including the                poorly ventilated locations. Ensure
                                               ground; because when the engine starts                 proper ventilation when working in
       :DUQLQJ                                 at starting-throttle, engine speed will be             trenches or other confined areas.
Your cut-off machine is a one-person           fast enough for the clutch to engage
tool. Do not allow other persons to be         V-belt pulley and turn the wheel. Never
near the cut-off machine. Start and            attempt to start the cut-off machine
operate your cut-off machine without           when the abrasive wheel is in a cut.
assistance. For specific starting instruc-     When you pull the starter grip, don’t
tions, see the appropriate section of your     wrap the starter rope around your hands.
owner’s manual.

76                                                                                                                                                
                                                                                                   002BA059 KN




                                                                                                                                                            002BA061 KN
                                            002BA060 KN
Never use the cut-off machine with one                    Avoid standing in direct line with the                               :DUQLQJ
hand. Your STIHL cut-off machine is                       wheel.                                                               Sparks from cutting metal
designed for hand-held use or operation                                                                                        can burn or cause cloth-
on a cut-off machine cart. Cutting with                                                                                        ing to catch fire. Don’t use
your cut-off machine resting on the                            :DUQLQJ                                                         a cut-off machine on flam-
ground or other surface can cause                         Take extreme care in wet and freezing                  mable ground. Always direct sparks
excessive wear to the bracket designed                    weather (rain, snow, ice). Clear the area              away from the operator or any flamm-
to protect the bottom of the tank                         where you are working.                                 able surroundings.
housing. Loss of fuel and personal injury
from fire may result. Replace damaged
or badly worn brackets immediately.                              :DUQLQJ                                               :DUQLQJ
                                                          Avoid stumbling on obstacles and watch                 To reduce the risk of injury from fire,
Grip: Always hold the cut-off machine                     out for holes or ditches. Be extremely                 do not cut into any pipe, drum or other
firmly with both hands when the engine                    cautious when working on slopes or                     container without first insuring that it
is running. Place your left hand on front                 uneven ground.                                         does not contain volatile or flammable
handle bar and your right hand on rear                                                                           substance.
handle and throttle trigger.
                                                                 :DUQLQJ                                         2SHUDWLQJ ,QVWUXFWLRQV
Left-handed users should follow this                      Never operate the cut-off machine with
instruction too.                                          the starting-throttle lock engaged as this
Wrap your fingers tightly around the                      does not permit proper control of the                         :DUQLQJ
handles, keeping the handles cradled                      speed of the unit and may lead to                      The wheel guard is adjustable. It is
between your thumbs and forefingers.                      serious injury.                                        extremely important that the wheel
Make sure your cut-off machine handles                                                                           guard is in place and set to suit the type
and grip are in good condition and free                                                                          of work and your stance. The guard
of moisture, pitch, oil or grease.                                                                               should always be adjusted so that the
                                                                                                                 user is not endangered by particles of
                                                                                                                 the material being cut, sparks or pieces
                                                                                                                 of damaged wheels either directly or by

                                                                                                                                                          76
ricochet. Failure to follow this instruction   piece can be easily broken afterwards.        3.   Be certain water is applied to both
could result in serious or fatal injury.       Do not cock, jam or wedge the wheel in             sides of wheel, since uneven
The ideal working speed of the cut-off         the cut.                                           distribution can cause "one sided"
machine depends on many factors, e. g.,                                                           wear with possible wheel breakage.
the material being cut, the type and
quality of the cutting wheel.                         :DUQLQJ                                4.   Use these wheels up the same day.
                                               Do not use abrasive wheels for rough               Do not store and reuse a wheel that
It is essential to determine the direction     grinding. Large bending stresses occur             has been used with water.
of the cut exactly before applying the         during such work and abrasive wheels
abrasive wheel to the work. Wheels are         may shatter or break and could cause
constructed for UDGLDO pressure only.          serious or fatal injury.                      ,PSRUWDQW $GMXVWPHQWV
/DWHUDO pressure must be avoided.
                                               If a cut-off machine cart is used, sweep      At correct idle speed, wheel should not
Check for cracks and make sure that no         debris from the path of the wheels as         turn. For direction to adjust idle speed,
pieces have broken off from the wheel          such may cause flexing of the abrasive        see the appropriate section of your
when it is stopped.                            wheel. This would result in high frictional   owner’s manual.
Check the wheel guard for cracks. If you       forces and thus greatly reduce the
discover any cracks, fit a new guard.          engine power available for the actual         Do not use a cut-off machine with incor-
                                               cutting work.                                 rect idle speed adjustment. The rotating
                                                                                             wheel may cause injury.
       :DUQLQJ                                 Always use the cart to cut in a straight
Hold the cut-off machine steady. Do not        line.                                         Have your STIHL dealer check your
change the direction of the cut during                                                       cut-off machine and make proper
the cut as this may produce a high                                                           adjustments or repairs.
torsional load on the abrasive wheel and       :HW FXWWLQJ ZLWK DEUDVLYH ZKHHOV
may cause it to break or shatter.                                                            Never touch a rotating wheel with your
                                               When cutting masonry with a water             hand or any part of your body.
To achieve a clean and efficient cut, pull     attachment:
the abrasive wheel across the work or
move it "to and fro" in the cutting            1.   Make certain water does not flow on      5HDFWLYH IRUFHV
direction. Do not use force to push the             wheel that is not running, since the
abrasive wheel into the work.                       wheel will absorb water and that will
                                                    affect wheel balance.                           :DUQLQJ
Insert the wheel into the material only as                                                   Reactive forces may occur at any time
deep as necessary to make the cut.             2.   Shut water off before wheel stops        the cutting wheel on at cut-off machine
To reduce the amount of dust created,               so that excess water will be             is rotating. If the wheel is slowed or
do not cut all the way through stone and            dissipated.                              stopped by frictional contact with any
concrete materials - leave a thin piece                                                      solid object or by a pinch, reactive forces
uncut. For most such materials, this                                                         may occur instantly and with great force.

76                                                                                                                                    
These reactive forces may result in the        wheels, circular saw blades, carbide
operator losing control of the cut-off         tipped blades, rescue blades or wood-            :DUQLQJ
machine, which may, in turn, result in         abrasive or toothed blades of any nature   To reduce the risk of injury from loss of
serious or fatal injury.                       on a cut-off machine. The use of such      control or from the shattering of an
                                               wheels or blades will greatly increase     abrasive wheel:
An understanding of the causes of these        the risk of loss of control and severe
reactive forces may help you avoid loss        personal injury or death from reactive     1.   Hold the cut-off machine firmly with
of control. Reactive forces are exerted in     forces, since the chipped section of an         both hands.
a direction opposite to the direction in       abrasive wheel, or the teeth of a saw
which the wheel is moving at the point of      blade may catch in the material being      2.   Maintain good balance and footing at
contact or pinch.                              cut and generate substantially greater          all times. Never cut while standing
                                               reactive forces.                                on a ladder.
Pull-away, climbing and rotational
forces.                                        Cut-off machines are designed for use      3.   Do not exceed the maximum
                                               with abrasive wheels in good condition          operating speed marked on the
The most common reactive forces are            RQO\ Machines designed for use with            wheel.
pull-away and climbing. If the contact is      wood-abrasive or other toothed blades
at the bottom of the wheel, a cut-off          use different types of guarding systems    4.   Do not use a wheel that has been
machine will try to pull away from the         which provide the protection neccessary         dropped.
operator (pull-away). If the contact is at     for those types of blades. Machines,
the front of the wheel, the wheel may          such as a cut-off machine, which are       5.   Never use circular saw blades,
attempt to climb the object being cut          designed for use with abrasive wheels,          carbide-tipped blades, rescue
(climbing). If the wheel is severely           require a different guarding system             blades, wood-abrasive blades or
pinched at the front, the wheel may be         which is not designed to provide protec-        toothed blades of any nature. Their
instantly thrown up and back towards           tion against all dangers presented by           use increases the risk of injury from
the operator with a great force in a           circular saw blades, carbide-tipped             reactive forces, blade contact and
rotational motion. The greater the force       blades, rescue blades or wood-abrasive          thrown tips.
generated, the more difficult it will be for   or toothed blades of any nature.
the operator to control the cut-off                                                       6.   Do not cut any material for which the
machine. Any of the reactive forces can,                                                       abrasive wheel is not authorized.
in some circumstances, cause the
operator to lose control of a cut-off                                                     7.   Position the cut-off machine in such
machine, allowing the rotating wheel to                                                        a way that your body is clear of the
come into contact with the operator.                                                           abrasive attachment.
Severe personal injury or death can
result.                                                                                   8.   Begin abrasive and continue at full
                                                                                               throttle.
Use only cutting attachment authorized
by STIHL. 1HYHU use chipped abrasive                                                      9.   Do not overreach.

                                                                                                                                76
                                                      15. Be alert to shifting of the work piece   Follow the maintenance and repair
                                                          or anything that could cause the cut     instructions in the appropriate section of
                                                          to close and pinch the wheel.            your owner’s manual.

                                                      16. Release the pressure on the              Use only STIHL replacement parts for
                                                          cut-off machine as you reach the         maintenance and repair. Use of parts
                                                          end of the cut. Too much pressure        manufactured by others may cause
                                                          may cause the operator to lose           serious or fatal injury.
                                                          control of the cut-off machine when
                                                          the abrasive wheel completes the
                                                          cut. The abrasive wheel may con-                :DUQLQJ
                                                          tact the operator or strike some         Always stop the engine and make sure
                                                          foreign object and shatter.              that the wheel is stopped before doing
                                                                                                   any maintenance or repair work or
                                                      17. Use extreme caution when                 cleaning the cut-off machine. Do not
                                        002BA062 KN




                                                          re-entering a cut and do not turn        attempt any maintenance or repair work
                                                          the wheel at an angle or push the        not described in your owner’s manual.
                                                          wheel into the cut as this may result    Have such work performed at your
                                                          in a pinching of the wheel.              STIHL service shop only.

10. Do not cut above shoulder height.                                                              Clean grinding dust after finishing work.
                                                      0DLQWHQDQFH 5HSDLU DQG 6WRULQJ              Empty the fuel tank before storing for
11. Use your cut-off machine for abrasive             RI WKH &XW2II 0DFKLQH                       longer than a few days.
    only. It is not designed for prying or
    shoveling away any objects.                       0DLQWHQDQFH UHSODFHPHQW RU UHSDLU          Fuel may only be stored in correctly
                                                      RI WKH HPLVVLRQ FRQWURO GHYLFHV DQG          labeled and approved containers.
12. Do not grind on side of the abrasive              V\VWHPV PD\ EH SHUIRUPHG E\ DQ\              Avoid direct skin contact and do not
    wheel.                                            QRQURDG HQJLQH UHSDLU HVWDEOLVKPHQW          in-hale the petrol vapours.
                                                      RU LQGLYLGXDO +RZHYHU LI \RX FODLP
13. Do not twist, thrust, knock or drop the           ZDUUDQW\ IRU D FRPSRQHQW ZKLFK KDV           Keep the handles dry, clean and free of
    machine. This can cause damage                    QRW EHHQ VHUYLFHG RU PDLQWDLQHG SUR         oil and fuel.
    to the wheel.                                     SHUO\ RU LI QRQDSSURYHG UHSODFHPHQW          Tighten all nuts, bolts and screws except
                                                      SDUWV ZHUH XVHG 67,+/ PD\ GHQ\              the carburetor adjustment screws after
14. Be especially alert for reactive forces           ZDUUDQW\                                    each use.
    when abrasive with the front of the
    wheel.                                            Never operate a cut-off machine that is
                                                      damaged, improperly adjusted or not
                                                      completely or securely assembled.


76                                                                                                                                         
                                                                                            6WRULQJ WKH 0DFKLQH


                                                your cut-off machine if the screen is       For periods of about 3 months or longer:
        :DUQLQJ                                 missing or damaged.
Never test the ignition system with
                                                                                            •   Drain and clean the fuel tank.
ignition wire terminal removed from
spark plug or with unseated spark plug,
                                                For any maintenance please refer to the     •   Run engine until carburetor is dry -
                                                maintenance chart DQG WR WKH ZDUUDQW\           this helps prevent the carburetor
since uncontained sparking may cause            VWDWHPHQW near the end of this manual.          diaphragms sticking together.
a fire.
                                                                                            •   Remove the abrasive wheel.
                                                Store spare wheels on a flat surface in a
                                                dry place preferably at a constant
                                                                                            •   Thoroughly clean the machine -
                                                                                                pay special attention to the
       :DUQLQJ                                  temperature where there is not risk of          cylinder fins and air filter.
To reduce the risk of fire and burn injury,
use only spark plugs authorized by
                                                frost, preferably at a constant
                                                temperature. Store cut-off machine in a
                                                                                            •   Store the machine in a dry, high
                                                                                                or locked location - out of the
STIHL. Always press spark plug boot             high or locked place, away from children.       reach of children and other
snugly onto spark plug terminal of the                                                          unauthorized persons.
proper size. (Note: If terminal has             Do not store a cut-off machine with a
detachable SAE adapter nut, it must be          wheel mounted on the machine.
attached.) A loose connection between
spark plug terminal and ignition wire
connector in the boot may create arcing
that could ignite combustible fumes and
cause a fire. Keep spark plug clean, and
make sure ignition lead is in good
condition.


        :DUQLQJ
Do not operate your cut-off machine if
the muffler is damaged, missing or modi-
fied. An improperly maintained muffler
will increase the risk of fire and hearing
loss.

Never touch a hot muffler or spill fuel or
other flammable liquid over it. Burn inju-
ries or fire will result. If your muffler was
equipped with a spark-arresting screen
to reduce the risk of fire (e. g. in the USA,
Canada and Australia), never operate



                                                                                                                                76
Mounting the Arbor Bearing and Guard
                                                                Top:    V-belt in position for inboard mounting
                                                                Center: Tightening hex. head screw
                                                                Bottom: V-belt in position for outboard mounting

The cutting blade drive (bearing with arbor and blade
guard) must be assembled before the machine is used for
the first time. The arbor bearing can be mounted to the
inboard or outboard side of the cast arm to suit cutting
requirements. Under normal circumstances the drive
should be mounted inboard of the arm because of the
better balance and only mounted outboard when required.



Inboard mounting


First fit V-belt (1) on the belt pulley (2) and position the
bearing plate (3) against the inside of the cast arm (4) so
that the tapped holes line up with the slots in the cast arm.


Position V-belt guard (5) against the outside of the arm
(4). Insert a hex. head screw (6) through one of the two
front holes and screw it into the bearing plate-move V-belt
guard to and fro to ease insertion. Now let go of the
bearing. Fit the other two screws (6) through the holes in
the V-belt guard (5) and screw them into the bearing plate
- the eccentric adjuster (7) must be fitted on the rear
screw.


Outboard mounting


Position the bearing plate (3) against the outside of the
arm (4) and fit the V-belt (1) on the belt pulley (2). If the
V-belt is new, this operation is easier if the M 10 hex. head
nut (8) is turned counterclockwise with the combination
wrench (17 mm), i.e. this turns the belt pulley (2). Position
bearing plate (3) so that the tapped holes line up with the
slots in the arm.




TS 350                                                                                                             15
                                                              Tensioning the V-belt
Top:    Inserting hex. head screw
                                                              Turning eccentric adjuster to tension V-belt
Bottom: Bearing mounted outboard




                                                              To tension the V-belt, first slacken off the two front hex.
                                                              head screws (6) and moderately tighten the rear one (with
                                                              eccentric adjuster). Then use a 13 mm open end wrench
                                                              to turn the eccentric adjuster (7) clockwise. This causes
                                                              the bearing to be shifted away from the engine and thus
                                                              tension the V-belt.


                                                              Once the correct tension has been reached, release the
                                                              eccentric adjuster (7) (as the rear hex. head screw has
                                                              been tightened down slightly the bearing and adjuster
                                                              remain in the set position). Then finally tighten down the
                                                              hex. head screws (6), starting with the rear one (with
                                                              eccentric adjuster).
Fit the V-belt guard (5) on the inside of the arm. Insert a
hex. head screw (6) through one of the two front holes
and screw it into the bearing plate (3) - move V-belt guard   The V-belt is correctly tensioned if it can be depressed
                                                                                 3   3
(5) to and fro to ease insertion. The assembly sequence is    slightly (5-10 mm/ /16- /8") with moderate thumb pressure.
otherwise as for "Inboard mounting".                          Overtensioning of the V-belt will accelerate wear.


When the cutting wheel is mounted outboard the wheel          On a new machine, or if a new V-belt has been fitted, it is
guard does not have the full 360° adjustment since the        advisable to check V-belt tension after about 1 operating
movement of the adjusting lever is restricted by the          hour and correct it if necessary.
handlebar mounting, i. e. reduced by about 20°.



16                                                                                                              TS 350
Abrasive Wheels                                                  Limiting adjustment on
                                                                 abrasive wheel guard
                                                                 Adjustment range of abrasive wheel guard


Cutting wheels for free-hand cutting operations are sub-
jected to particularly high bending and compressive stres-
ses. STIHL has therefore developed - together with lead-
ing abrasive wheel manufacturers - top quality cutting
blades which exactly match the engine characteristics of
the cut-off-saw. They are of a consistently high quality
and perfectly balanced.


 Out-of-round or poorly balanced abrasive wheels
 increase vibration and reduce the service life of the
 cut-off-saw. Good abrasive performance can only be
 achieved with the abrasive wheels supplied by STIHL.
                                                                 On the USA version a stop (1) is attached to the cut-off-
Abrasive wheels are heat sensitive. Always store your            saw's bearing plate.
cutoff-saw in a place where it is not exposed to direct
sunlight or other sources of heat.
                                                                 The rubber buffer (2) of this stop projects through the
                                                                 flange of the abrasive wheel guard so that its adjustment
 Store spare cutting wheels in a dry place where there is        is limited to the range shown (see illustration). This
 no risk of frost, preferably at a constant temperature.         prevents the guard being turned too far.


Your STIHL dealer stocks a range of special abrasive             It is necessary to take out the mounting screws (3) and
wheels (3 and 6 mm / 0.12 and 0.24 in thick) for the mani-       remove the rubber buffer (2) to turn the guard through
fold applications cut-off-saw. For example, wheels for           approx. 180° when the abrasive wheel is fitted on the out-
abrasive bituminous material, gravel asphalt, stone, con-        board side of the cast arm. Then turn the guard to the
crete, clay pipe, structural steel, highly alloyed steel, cast   required position and refit the rubber buffer on the stop.
iron, non-ferrous metals etc.




TS 350                                                                                                                  17
Mounting the abrasive Wheel
                                                                 Top:    Blocking the arbor
                                                                 Center: Removing hex. head screw
                                                                 Bottom: Rear thrust washer correctly positioned

The engine must be switched off and the arbor blocked
before mounting or removing the abrasive wheel. To do
this, push the locking pin squarely through the hole in the
V-belt guard. If one of the V-belt pulley spokes is in the
way, use the combination wrench to turn the arbor until the
locking pin can be inserted.

Slacken off and remove the M 10 hex. head screw with the
combination wrench (17 mm) and take it off the arbor
together with the front thrust washer.

The cutting wheel can now be pulled off the arbor and
taken out of the guard. This operation is made easier if the
blade guard is turned so that its lower edge is vertical.

Before fitting the new abrasive wheel, check that the rear
thrust washer is positioned so that the notch in its center
hole engages over the lug on the arbor.

Mount the new abrasive wheel in the reverse sequence to
that described above. Make sure that the locking tab on
the front thrust washer engages in one of the two slots in
the arbor. Use combination wrench to securely tighten the
M 10 hex. head screw.

Pay attention to arrows for direction of rotation when fitting
a diamond abrasive wheel.

If a wider kerf is required (e. g. for installing induction
loops in road surfaces), two diamond abrasive wheels
can be used side by side. In such a case it is essential to
ensure that the segments of both wheels are positioned
exactly next to one another.


Important! Two composite wheels must never be used
simultaneously, for they may break and cause injuries
as they wear down unevenly.




18                                                                                                                 TS 350
)XHO PL[                                                                                     )XHOLQJ


This engine is certified to operate on         We recommend STIHL 50:1 two-stroke            Before fueling, clean the filler cap
unleaded gasoline and with the                 engine oil since it is specially formulated   and the area around it to ensure that no
mix ratio 50:1.                                for use in STIHL engines.                     dirt falls into the tank.

Your two-stroke engine requires a              Do not use BIA or TCW (two-stroke             Always thoroughly shake the mixture in
mixture of brand-name gasoline and             water cooled) mix oils!                       the canister before fueling your machine.
quality two-stroke engine oil with the clas-
sification TC.                                 Take care when handling gasoline.                   :DUQLQJ
                                               Avoid direct contact with the skin and        In order to reduce the risk of burns or
Use regular branded unleaded gasoline          avoid inhaling fuel vapour.                   other personal injury from escaping gas
with a minimum octane rating of                                                              vapor and fumes, remove the fuel filler
90 RON (U.S.A./Canada: pump octane             The canister should be kept tightly           cap carefully so as to allow any pressure
min. 89!). If the octane number of the         closed in order to avoid any moisture         build-up in the tank to release slowly.
regular grade gasoline in your area is         getting into the mixture.                           :DUQLQJ
lower use premium unleaded fuel.
                                                                                             After fueling, tighten fuel cap
Fuel with a lower octane rating may            The fuel tank and the canister in which       as securely as possible by hand.
result in preignition (causing "pinging")      fuel mix is stored should be cleaned
which is accompanied by an increase in         from time to time.
engine temperature. This, in turn,
increases the risk of the piston seizure
and damage to the engine.                      )XHO PL[ DJHV

The chemical composition of the fuel is        Only mix sufficient fuel for a few days
also important. Some fuel additives not        work, not to exceed 3 months of storage.
only detrimentally affect elastomers           Store in approved safety fuel-canisters
(carburetor diaphragms, oil seals, fuel        only. When mixing, pour oil into the




                                                                                                                                    A004 KN
lines etc.), but magnesium castings as         canister first, and then add gasoline.
well. This could cause running problems
or even damage the engine. For this            Gaso-          Oil (STIHL 50:1 or
reason it is essential that you use only       line           equivalent branded TC oils)    Change the fuel pick up body every year.
name branded fuels!
                                               US gal.        US fl.oz                       Before storing your machine for a long
Use only STIHL two-stroke engine oil or                                                      period, drain and clean the fuel tank and
equivalent branded two-stroke air-              1              2.6                           run engine until carburetor is dry.
cooled engine oils with the classification      2 1/2          6.4
TC for mixing.                                  5             12.8

                                               Dispose empty mixing-oil canisters only
                                               at authorized disposal locations.

76                                                                                                                               
Starting
                                                                    Top:    Choke lever in "CHOKE" position (cold start)
                                                                    Center: Stop switch away from "Stop"
                                                                    Bottom: Starting-throttle position

To start, place cut-off-saw on ground, make sure you
have a firm foothold and the cutting blade is clear of all
obstructions. Nobody else should be standing within the
working range of the machine.

Starting procedure
1. If the engine is cold, move choke lever (1) to "Choke".
   If the engine is warm, move choke lever (1) away from
   "Choke". This procedure also applies when the engine
   has been running but is still cold.

2. Move stop switch (2) away from "STOP".

3. Set throttle trigger (3) to half-throttle position by
   pressing in throttle trigger interlock (4), throttle trigger
   (3) and starting-throttle lock (5) in that order. Let go of
   throttle trigger (3) first and then the starting-throttle-lock
   (5).

4. Now hold the saw firmly on the ground with your left
   hand on the handlebar (6).

5. Pull starter grip (5) slowly with your right hand until you
   feel the starter engage. Then give starter rope a brisk,
   strong pull, but do not pull it out more than approx.
   70 cm (27.5 in) as it might otherwise break.
   Continue cranking until engine begins to fire. Then, if
   you are starting from cold, move choke lever (1)
   immediately away from "Choke" (choke opens) and pull
   again.

6. As soon as the engine is running, disengage starting
   throttle lock (5) immediately by briefly squeezing the
   throttle trigger so that the engine can settle down to
   idle speed.

7. The engine is stopped by moving the stop switch (2) to
   the "STOP" position.



20                                                                                                                         TS 350
                                                                   Top:    Starting
                                                                   Center: Throttle trigger in idle position
                                                                   Bottom: Stop switch in "STOP" position

Points to observe when starting:

The choke lever is mechanically connected to the
carburetor's choke valve. The choke valve is closed when
the choke lever is on "Choke" and open when the choke
lever is moved away from "Choke".


When starting a cold engine only keep the choke lever in
the "Choke" position until the engine begins to fire. Then
move the choke lever immediately, away from "Choke",
even if the engine stops and you have to repeat the
starting procedure. If you leave the choke lever on
"Choke", the combustion chamber will flood and stall the
engine.


If you have moved the choke lever away from "Choke"
after the engine fired and the engine still does not run after
several attempts, it is already flooded. In such a case,
remove and dry off the spark plug. Clear the combustion
chamber by pulling starter rope several times with the
spark plug still removed and the stop switch in the "STOP"
position. When you now try to start, move the choke lever
away from "Choke", even if the engine is cold, and set the
throttle trigger to the starting-throttle position.


In very cold weather only open the choke sligtly after
starting-move choke lever to center position. Allow engine
to warm up for a brief period at half-throttle. Then move
choke lever away from "Choke" and disengage the
starting throttle lock.


A new engine or one which has been run until the fuel
tank is dry will not start first time after fueling because fuel
only begins to reach the carburetor when the engine has
been turned over few times on the starter.



TS 350                                                                                                         21
&KHFNLQJ 6SDUN 3OXJ                                                                                             *HQHUDO 1RWHV RQ 2SHUDWLRQ


                                                                                                                6WDUWLQJ IRU ILUVW WLPH

                                                                                                                A factory new machine should be run
                                                                                                                with the carburetor set slightly on the
                                                                                                                rich side for the first three tank fillings




                                           000BA039 KN
                                                                                                                (see chapter on "Carburetor") so that the
                                                                                                                cylinder bore and the bearings receive
                                A                                                                               additional lubrication during the break-in
                                                                                                                period.
Wrong fuel mix (too much engine oil in                                                                          As all the moving parts have to bed in
the gasoline), a dirty air filter and                                                                           during the break-in period, the frictional
unfavorable running conditions (mostly
                                                                                         1                      resistances in the engine are greater
at part throttle etc.) affect the condition of                                                                  during this period. For this reason the
the spark plug. These factors cause                                                                             engine only develops its maximum




                                                                                                  000BA036 TR
deposits to form on the insulator nose                                                                          power after about 5 to 15 tank fillings.
which may result in trouble in operation.                                                                       The carburetor setting must never be
                                                                                                                made leaner in order to achieve an
If engine is down on power, difficult to                                                                        apparent increase in power as this could
start or runs poorly at idling speed,
                                                         •
                                                                                                                cause the engine to exceed its maximum
first check the spark plug.                                   Fit a new spark plug after                        permissible rpm (see "Specifications"

•
                                                              approx. 100 operating hours -                     and "Carburetor").
     Remove spark plug -                                      or earlier if the electrodes are
     see chapter “Starting”:
•
                                                              badly eroded.
     Clean dirty spark plug.
•
                                                                                                                'XULQJ RSHUDWLRQ
     Check electrode gap -
     it should be 0.5mm/0.02" $ -                            :DUQLQJ
                                                                                                                After a long period of working at full load
     readjust if necessary.                              To reduce the risk of fire and burn injury,
•
                                                                                                                it is advisable not to shut off the engine
     Use only resistor type spark plugs                  use only spark plugs authorized by
                                                                                                                immediately, but let run for a short while
     of the approved range.                              STIHL (see “Specifications”). Always
                                                                                                                at idling speed. This allows the heat
                                                         press spark plug boot  snugly onto
                                                                                                                which has been generated in the engine
Rectify problems which have caused                       spark plug terminal  of the proper
                                                                                                                during full throttle operation to be
fouling of spark plug:                                   size. (Note: If terminal has detachable
                                                                                                                dissipated by the flow of cooling air and
Incorrect carburetor setting, too much oil               SAE adapter nut, it must be attached.)
                                                                                                                also protects engine-mounted
in fuel mix, dirty air filter,                           A loose connection between spark plug
                                                                                                                components (ignition, carburetor) from
unfavorable running conditions, e.g.                     terminal and ignition wire connector in
                                                                                                                thermal overload.
operating at part load.                                  the boot may create arcing that could
                                                         ignite combustible fumes and cause a
                                                         fire.

                                                                                                                                                  76 
Air Filter
                                                                    Top:    Removing air filter
                                                                    Bottom: Component parts in correct sequence

The air filter's function is to intercept dust and dirt in the
combustion air and thus reduce wear on engine
components.

Clogged air filters reduce engine power, increase fuel
consumption and make starting more difficult.

The filter system consists of a prefilter, main filter and
auxiliary filter. Always clean the prefilter first if engine
power begins to drop off. It should be knocked out on the
palm of your hand or blown out with compressed air. The
prefilter can also be washed out in clean gasoline if it is
very dirty, but must be completely dry before you refit it.
For this reason we recommend that you use two prefilters
in rotation.

Always renew a dirty main filter. We do not recommend
cleaning this paper element since the results are
unsatisfactory and the risk of damaging the filter paper is
too great.

If the main filter should fail for any reason (e.g. damage),
the auxiliary filter will protect the engine from damage.
Failure of the main filter is indicated by a noticeable layer
of dirt on the flocked wire mesh of the auxiliary filter. If this
happens, clean the auxiliary filter when you change the
main filter.
                                                                    When refitting, put the auxiliary filter onto the studs so that
As long as the main filter is in good condition there is no         its sealing edges over the shoulder inside the filter
need to clean the auxiliary filter as it is normally kept free      housing. Slip the prefilter over the main filter and install.
from dirt.
                                                                    Place silencer and filter cover on the studs, fit wingnuts
Close the choke shutter - move choke lever to "Choke".              and tighten down moderately.
Unscrew the wingnuts (1) and take off the filter cover (2)
and silencer (3). Pull the prefilter (4) off the main filter (5).
If necessary, also remove the auxiliary filter (6), knock it
out on the palm of your hand and wash it in a
non-flammable cleaning solution (warm soapy water).



TS 350                                                                                                                           23
$GMXVWLQJ &DUEXUHWRU


0RWRU PDQDJHPHQW                                                                                     6HWWLQJ LGOLQJ VSHHG

Exhaust emissions are controlled by the                                                              It is usually necessary to change the
design of the fundamental engine                                                                     setting of the idle speed adjusting screw
parameters and components                                                                            /$ after every correction to the low
(e.g. carburation, ignition, timing and                                                              speed adjusting screw /.
valve or port timing) without the addition
of any major hardware.                                                                               (QJLQH VWRSV DW LGOH VSHHG
                                                                                                     Set to standard setting!
The carburetor is set at the factory to                 L H
guarantee an optimum fuel-air mixture
under all operating conditions.
                                                                         LA                          •    Turn the idle speed adjusting
                                                                                                          screw /$ clockwise until
                                                                     L
                                                                   1/4    H                               the cutting wheel starts to run,
                                                                         1/4
It ensures that your machine will run                                                                     then back off the screw one quarter
smoothly, be fuel efficient, operate                                                                      of a turn




                                                                                       330BA001 KN
reliably and produce low emissions.
                                                                                                     &XWWLQJ ZKHHO UXQV RQ DW LGOH VSHHG
6WDQGDUG VHWWLQJ DQG H[SODQDWLRQ RI                                                                  Set to standard setting!
VHWWLQJ SLFWRJUDPV
                                                                                                     •    Turn the idle speed adjusting
•    Check the air filter and clean or
     replace it if necessary
                                             &RUUHFWLRQ RI FDUEXUHWRU VHWWLQJ IRU
                                             KLJKHU DOWLWXGHV
                                                                                                          screw /$ counterclockwise until
                                                                                                          the cutting wheel stops running,
•    Check the spark arresting screen
     and clean or replace it if necessary    If the engine runs unsatisfactorily, slight
                                                                                                          then turn screw another quarter
                                                                                                          turn in the same direction
                                             readjustment may be necessary:
      Turn the high speed adjusting                                                                  (UUDWLF LGOLQJ EHKDYLRU
   H
 1/4 screw + counterclockwise as far       •    Check standard setting                             SRRU DFFHOHUDWLRQ
      as stop, i.e. 1/4 turn from max.
lean setting
                                             •    warm up the engine
                                                                                                     Idle setting is too lean (e.g. at cold

       Turn the low speed adjusting
                                             •    Turn the high speed adjusting
                                                  screw + clockwise (leaner)
                                                                                                     ambient temp.)
   L
 1/4 screw / clockwise as far as stop -
       then back off the screw one quar-
                                                                                                     •    Turn the low speed adjusting
                                                                                                          screw / counterclockwise -
ter of a turn                                       :DUQLQJ                                               no further than stop -
                                             If you make the setting too lean, the                        until engine runs and accelerates
                                             engine might be damaged as a result of                       smoothly
                                             insufficient lubrication and overheating.




76                                                                                                                                         
Rewind Starter
                                                               Top:    Possible special knots
Removing the mounting screws                                   Bottom: Component parts of the starter assembly




Replacing the starter rope

First remove the three screws which retain the fan
housing. Then take off the fan housing.

Use a screwdriver or a suitable pair of pliers to carefully
remove the spring slip (1) from the starter post. Now take
off the thrust washer (2) and pawl (3) and pull the rope
rotor (4) off the starter post. Remove remaining rope from
the rotor and starter grip (5).


Thread the new rope - Part No. 1122 190 2900 - through
the top of the starter grip and down through the guide
bush (6). Pull the rope through the rotor and secure it with
a simple overhand knot.


Slide rotor onto the starter post and turn it back and forth
until the rewind spring's anchor loop (7) engages.




TS 350                                                                                                           25
Installing the spring clip                                       Tensioning the rewind spring




back of the rope rotor. Rotate the rotor back and forth until    Tensioning the rewind spring
the slotted area engages the starter rewind spring anchor
loop.                                                            Rewind the starter rope by turning the rotor in
                                                                 counterclockwise direction until the starter grip has
Now insert pawl in rope rotor and press spring clip onto         reached a distance of about 20 cm (8 in) from the fan
starter post with a suitable pair of pliers, making sure that    shroud. Form a loop in the remaining rope next to the rim
the spring clip engages on the pawl's guide pin and points       of the rope rotor. Use this loop to turn the rope rotor
it in the clockwise direction. Then tension rewind spring.       clockwise by three full revolutions and hold the rope rotor
                                                                 in place by hand. Pull out and straighten the twisted rope.
                                                                 Gradually release the rope rotor and pull in the starter
Replacing a broken rewind spring                                 rope until it is fully rewound on the rope rotor by spring
                                                                 force.
Remove the rope rotor as above. The spring housing
together with the rewind spring can then be removed from         The rewind spring is tensioned correctly if the starter grip
the fan housing by turning the fan housing over and let it       is held firmly in place against the starter housing by spring
drop out of the recess in the fan housing. A replacement         tension and does not droop. If more tension is required
spring and spring housing are supplied as an assembly.           add one more turn on the rope rotor. The rope rotor should
Lubricate the spring with a few drops of non-resinous oil        be able to be rotated by at least one-half an extra turn with
before installing it.                                            the rope pulled all the way out. If spring tension is too
                                                                 great pull out the starter rope, hold the rotor firmly by
Drop the rewind spring/housing assembly (with the bottom         hand, and remove one turn of the rope.
plate area up) into the fan shroud recess. If the spring
should pop out of its housing during installation re-insert it   A rewind spring that is tensioned too heavily will
in its housing starting from outside to inside in                probably break.
counterclockwise direction. Reassemble the rope rotor as         Re-install the fan shroud with the three retaining screws
above.                                                           securely tightened.


26                                                                                                                   TS 350
 Changing the V-belt
                                                              Top:    Mounting screws on cast arm
                                                              Center: Removing cast arm
Arbor bearing and guard mounting screws                       Bottom: Cast arm with V-belt




To change the V-belt, first remove the arbor bearing and
abrasive wheel guard. To do this, unscrew the three
mounting screws, take off the V-belt guard and lift the
arbor bearing and abrasive-blade guard away from the V-
belt.


Now remove the three mounting screws from the cast
arm. Push the engine slightly to one side and take off the
cast arm.


Place the new V-belt in the cast arm (see illustration) and
reassemble. Check the position and freedom of move-
ment of the V-belt before finally tightening the mounting
screws. Refit the arbor bearing and abrasive wheel guard
- refer to "Assembling the Arbor Bearing and Guard" and
"Tensioning the V-belt".




TS 350                                                                                              27
STIHL CutquikTM Cart 4201 710 1403                           Spark arresting screen
and Cutting Depth Limiter 42010071041                        in the muffler
(special accessory)




                                                             The spark arresting screen in the muffler
                                                             must be checked if the engine
                                                             performance deteriorates.

                                                             •   Unscrew the screw (1)
                                                             •   Remove the spark arresting
The TS 350 can be mounted on a cart which greatly                screen (2) with suitable pliers.
simplifies handling of the machine and enables smooth,       •   Clean the soiled spark arresting
straight cuts to be obtained for road repairs and applying       screen, do not widen the mush
road markings as well as when abrasive joints and edges.     •   The screen must be replaced if it is
                                                                 damaged or if there is a severe
A abrasive depth limiter is also available as a special          build-up of carbon
accessory and enables a constant depth of cut to be          •   Refit the spark arresting screen
maintained when working with a diamond abrasive wheel.       •   Fit the screw
                                                             •   Do not operate the engine without
                                                                 screen in place.



28                                                                                            TS 350
0DLQWHQDQFH FKDUW


 The following information refers to normal operating conditions.




                                                                                                                   After work or daily




                                                                                                                                                                               In the event of a
 The specified intervals must be reduced accordingly when working under




                                                                                                                                         after refuelling




                                                                                                                                                                                                                              Refer to page
                                                                                                   starting work




                                                                                                                                                                                                                As required
                                                                                                                                                                               malfunction

                                                                                                                                                                                                   If damaged
                                                                                                                                         Every time
 aggravated conditions (severe dust formation, etc.) and with longer daily




                                                                                                                                                                     Monthly
                                                                                                                                                            Weekly
                                                                                                   Before
 working hours.

                                                 Visual inspection (condition, absence of leaks)      x                                      x
 Complete machine
                                                 Clean                                                             x
 Throttle trigger, throttle trigger interlock,
 slide control                                   Functional test                                      x                                      x
                                                 Check                                                                                                               x
 Filter in fuel tank
                                                 Replace                                                                                                                           x
 Fuel tank                                       Clean                                                                                                               x
                                                 Clean                                                                                                               x                                                        16
 V-belt
                                                 Replace                                                                                                                                           x            x             27
 Air filter (prefilter, auxiliary filter)        Clean                                                x                                                                            x                                          23
 Air filter (all filter components)              Replace                                                                                                                                           x            x             23
 Cooling air intake ports                        Clean                                                             x
 Cylinder fins                                   Clean                                                             x
                                                 Inspect                                                           x                                                                                                          28
 Spark arresting screen in the muffler
                                                 Clean or replace                                                                                                                                               x             28
                                                 Check idle speed -
 Carburetor                                      the cutting wheel must not run on                    x                                      x                                                                                24
                                                 Adjust idle speed                                                                                                                                              x             24
 Spark plug                                      Adjust electrode gap                                                                                                              x                                          22
 Accessible nuts and bolts                       Retighten                                                                                                                                                      x
 (but not adjusting screws)
                                                 Have replaced by the
 Rubber buffer (AV element)                                                                                                                                                        x
                                                 STIHL customer service
                                                 Check                                                x                                      x
 Abrasive wheel
                                                 Replace                                                                                                                                           x            x             18
 Support/Bracket/Rubber buffer                   Check                                                             x
 (Bottom side of unit)                           Replace                                                                                                                                           x            x

The user of this unit should carry out             :DUUDQW\ FODLPV IROORZLQJ UHSDLUV                                 Original STIHL parts can be identified
only the maintenance operations                    FDQ EH DFFHSWHG RQO\ LI WKH UHSDLU                                by the STlHL part number, the
described in this manual. Other repair             KDV EHHQ SHUIRUPHG E\ DQ DXWKRUL]HG                               T logo and the STIHL parts
work may be performed only by an                   67,+/ 6HUYLFH GHDOHU XVLQJ RULJLQDO                               symbol  The symbol may appear
authorized STIHL Service dealer.                   67,+/ VSDUH SDUWV                                                alone on small parts.

76                                                                                                                                                                                                                                     
6SHFLILFDWLRQV


(QJLQH                                     )XHO V\VWHP                                  'LPHQVLRQV

STIHL single-cylinder two-stroke engine    Carburetor:                                  Length including mounted abrasive
Displacement:         60.3 cm3             All-position diaphragm carburetor with       wheel dia. 300 mm
                      (3.68 cu.in)         integrated fuel pump                         (12 in):             760 mm (29.9 in)
Cylinder bore:        49 mm (1.93 in)                                                   Height up to guard: 330 mm (13.0 in)
Piston stroke:        32 mm (1.26 in)      Air filter:                                  Width including
Power:                3.0 kW (4.1 HP)      Prefilter, large main filter (paper filter   handle bar:          310 mm (12.2 in)
                                           cartridge) and flocked auxiliary filter
Rated spindle
speed:               5,000 r.p.m.          Fuel tank capacity:                          :HLJKW (without abrasive wheel)
                                           0.55 litres (1.2 pt)
(make sure that the maximum operating                                                   with dia. 300 mm:     9.55 kg (21 lb)
wheel speed is above or equal to the       Fuel mix:                                    with dia. 350 mm:     9.95 kg (22 lb)
rated spindle speed of your cut-off ma-    refer to the chapter " Fuel mix".
chine).
                                                                                        $FFHVVRULHV
                                           $EUDVLYH ZKHHOV
                                                                                        Set of tools
,JQLWLRQ V\VWHP                            Composite abrasive wheels for steel,
                                           stone, asphalt, ductile cast pipes
Type:                                      and plastics*.                               6SHFLDO DFFHVVRULHV
Electronically controlled                  Diamond abrasive wheels for stone
(breakerless) magneto ignition             and asphalt.                                 STIHL CutquikTM cart
Spark plug                                                                              Attachment (TS 350) for CutquikTM cart
(interference-                             Dia. 300 mm (12 in) or 350 mm (14 in)        Cutting depth limiter
suppressed):            Bosch WSR 6 F      2.6 to 6 mm (0.10 to 0.24 in) thick          Water attachment for wet cutting
                        Champion RCJ 6 Y   Cutting depth approx.                        Water container
                        or NGK BPMR 7 A,   100 mm (3.9 in) with
Electrode gap:          0.5 mm (0.02 in)   300 mm (12 in) wheel
Spark plug thread:      M14 x 1.25,        115 mm (4.5 in) with
                        9.5 mm (0.37 in)   350 mm (14 in) wheel
                        long




                                           * Not available in all countries

                                                                                                                        76 
67,+/ ,QFRUSRUDWHG )HGHUDO (PLVVLRQ &RQWURO :DUUDQW\ 6WDWHPHQW


<RXU :DUUDQW\ 5LJKWV                          you, including diagnosis (if the             As the small off-road equipment engine
DQG 2EOLJDWLRQV                               diagnostic work is performed at an           owner, you should be aware, however,
                                              authorized dealer), parts, and labor.        that STIHL Incorporated may deny you
The U.S. Environmental Protection                                                          warranty coverage if your small off-road
Agency (EPA) and STIHL Incorporated                                                        equipment engine or a part has failed
are pleased to explain the Emission           0DQXIDFWXUHU¶V :DUUDQW\ &RYHUDJH            due to abuse, neglect, improper mainte-
Control System Warranty on your equip-                                                     nance or unapproved modifications.
ment type engine. In the U.S. new 1997        In the U.S., 1997 and later model year
and later model year small off-road           small off-road equipment engines are         You are responsible for presenting your
equipment engines must be designed,           warranted for two years. If any emission-    small off-road equipment engine to a
built and equipped, at the time of sale, to   related part on your engine is defective,    STIHL service center as soon as a
meet the U.S. EPA regulations for small       the part will be repaired or replaced by     problem exists. The warranty repairs will
non road engines. The equipment engine        STIHL Incorporated free of charge.           be completed in a reasonable amount of
must be free from defects in materials                                                     time, not to exceed 30 days.
and workmanship which cause it to fail
to conform with U.S. EPA standards for        2ZQHU¶V :DUUDQW\ 5HVSRQVLELOLWLHV           If you have any questions regarding
the first two years of engine use from the                                                 your warranty rights and responsibilities,
date of sale to the ultimate purchaser.       As the small off-road equipment engine       please contact a STIHL customer
                                              owner, you are responsible for the           service representative at 1-800-467-
STIHL Incorporated must warrant the           performance of the required mainte-          8445 or you can write to
emission control system on your small         nance listed in your owner’s manual.
off-road engine for the period of time        STIHL Incorporated recommends that           STIHL Inc.,
listed below provided there has been no       you retain all receipts covering mainte-     536 Viking Drive, P.O. Box 2015,
abuse, neglect or improper maintenance        nance on your small off-road equipment       Virginia Beach, VA 23450-2015.
of your small off-road equipment engine.      engine, but STIHL Incorporated cannot
                                              deny warranty solely for the lack of
Your emission control system includes         receipts or for your failure to ensure the   &RYHUDJH E\ 67,+/ ,QFRUSRUDWHG
parts such as the carburetor and the          performance of all scheduled mainte-         STIHL Incorporated warrants to the
ignition system. Also included may be         nance.                                       ultimate purchaser and each subse-
hoses, and connectors and other                                                            quent purchaser that your small off-road
emission related assemblies.                  Any replacement part or service that is      equipment engine will be designed, built
                                              equivalent in performance and durability     and equipped, at the time of sale, to
Where a warrantable condition exists,         may be used in non-warranty mainte-          meet all applicable regulations. STIHL
STIHL Incorporated will repair your small     nance or repairs, and shall not reduce       Incorporated also warrants to the initial
off-road equipment engine at no cost to       the warranty obligations of the engine       purchaser and each subsequent
                                              manufacturer.




76                                                                                                                              
purchaser that your engine is free from     Mechanical diagnostic work will be            :KHUH WR PDNH D FODLP IRU :DUUDQW\
defects in materials and workmanship        performed at an authorized STIHL              6HUYLFH
which cause the engine to fail to conform   servicing dealer. Emission test may be        Bring the product to any authorized
with applicable regulations for a period    performed either at STIHL Incorporated        STIHL servicing dealer and present the
of two years.                               or at any independent test laboratory.        signed warranty card.

                                                                                          0DLQWHQDQFH 5HTXLUHPHQWV
:DUUDQW\ 3HULRG                             :DUUDQW\ :RUN                                 The maintenance instructions in this
The warranty period will begin on the       STIHL Incorporated shall remedy               manual are based on the application of
date the utility equipment engine is        warranty defects at any authorized            the recommended 2-stroke fuel-oil
purchased by the initial purchaser and      STIHL servicing dealer or warranty            mixture (see also instruction "Fuel").
you have signed and sent back the           station. Any such work shall be free of       Deviations from this recommendation
warranty card to STIHL. If any emission     charge to the owner if it is determined       regarding quality and mixing ratio of fuel
related part on your engine is defective,   that a warranted part is defective. Any       and oil may require shorter maintenance
the part will be replaced by STIHL          manufacturer-approved or equivalent           intervals.
Incorporated at no cost to the owner.       replacement part may be used for any
Any warranted part which is not             warranty maintenance or repairs on            /LPLWDWLRQV
scheduled for replacement as required       emission-related parts and must be            This Emission Control Systems Warranty
maintenance, or which is scheduled only     provided without charge to the owner.         shall not cover any of the following:
for regular inspection to the effect of     STIHL Incorporated is liable for damages
"repair or replace as necessary" will be    to other engine components caused by          - repair or replacement required
warranted for the warranty period. Any      the failure of a warranted part still under     because of misuse, neglect or lack of
warranted part which is scheduled for       warranty.                                       required maintenance,
replacement as required maintenance
will be warranted for the period of time    The following list specifically defines the   - repairs improperly performed or
up to the first scheduled replacement       emission-related warranted parts:               replacements not conforming to
point for that part.                                                                        STIHL Incorporated specifications that
                                            Carburetor                                      adversely affect performance and/or
                                            Choke (Cold start enrichment system)            durability, and alterations or
'LDJQRVLV                                   Intake manifold                                 modifications not recommended or
You, as the owner, shall not be charged     Air filter                                      approved in writing by STIHL
for diagnostic labor which leads to the     Spark plug                                      Incorporated,
determination that a warranted part is      Magneto or electronic ignition system
defective. However, if you claim warranty   (ignition module)                             and
for a component and the machine is          Catalytic converter (if applicable)
tested as non-defective, STIHL              Fasteners                                     - replacement of parts and other
Incorporated will charge you for the cost                                                   services and adjustments necessary
of the emission test.                                                                       for required maintenance at and after
                                                                                            the first scheduled replacement point.

                                                                                                                           76 

				
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