Stihl TS 350 User manual

Main Parts of the TS 350 CutquikTM 2
Definitions 3
Safety precautions 4
The operator 4
- The cut-off machine 6
- The use of the cut-off machine 7
- Maintenance, repair and storing
of the cut-off machine 13
Storing the Machine 14
Mounting the Arbor Bearing
and Guard 15
Tensioning the V-belt 16
Abrasive Wheels 17
Limiting Adjustment on
Abrasive Wheel Guard 17
Mounting the Abrasive Wheel 18
Fuel mix 19
Fueling 19
Starting 20
Checking Spark Plug 22
General Notes on Operation 22
Air filter 23
Adjusting Carburetor 24
Motor Management 24
Rewind Starter 25
Changing the V-belt 27
STIHL CutquikTM Cart 28
Spark arresting screen
in the muffler 28
Maintenance chart 29
Specifications 30
Andreas Stihl Limited Warranty
Federal Emission Control Systems
Utility Engines 31
This Manual contains operating and
safety instructions for your STIHL
TS 350 CutquikTM
Pay special attention to the safety
precautions outlined on pages 4 to 14.
Allow only persons who understand this
Manual to operate your cut-off machine.
To receive maximum performance and
satisfaction from your STIHL cut-off ma-
chine, it is important that you read and
understand the maintenance and
safety precautions before using your
cut-off machine. Contact your STIHL
dealer or the STIHL distributor for your
area if you do not understand any of the
instructions in this Manual.
Because a cut-off machine is a high-
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.
1999 Andreas Stihl AG & Co, Waiblingen
0458 330 3021. M6. H9. T. Printed in Germany
Printed on chlorine-free paper.
Printing inks contain vegetable oils,
paper is recyclable
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76 

2TS 350
Main Parts of the TS 350 CutquikTM

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Can either be an abrasive wheel
or a diamond abrasive wheel.
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Guards the wheel and deflects sparks.
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For adjusting the wheel guard in a
way that the beam of sparks is
directed away from the operator
and the machine.
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Handle bar for the left hand
at front of cut-off machine.
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Reduces engine exhaust noise
and directs the exhaustgases
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Connects the spark plug
with the ignition wire.
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The support handle for the right hand,
located at or toward the rear of the
cut-off machine.
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Distributes claming pressure of
mounting nut evenly over abrasive wheel.
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The grip of the pull starter
which is the device to start the engine.
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Switches the engine’s ignition system
off and stops the engine.
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For closing the fuel tank.
(Fits on fuel filler neck).
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For removing filter cover to permit
filter to be cleaned.
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Prevents dust and foreign
matter from entering the carburetor.
(Not illustrated)
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A control used when starting cold
engine
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Controls the speed of the engine.
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Must be depressed before activating
the throttle trigger.
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Keeps the throttle partially open
during starting.
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For tensioning the V-belt.
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Couples engine to the V-belt pulley
when engine is accelerated beyond
idle speed.
(Not illustrated)
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The wheel that drives the V-belt
and the abrasive wheel.
(Not illustrated)
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Different models may have different
parts and controls.
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76 

The use of any cut-off
machine may be
hazardous. Because a
cut-off machine is a
high-speed, fast-cutting
power tool, special safety precautions
must be observed to reduce the risk of
personal injury and fire.
It is important that you read, fully under-
stand and observe the following safety
precautions and warnings.
Read the Owner’s
Manual and the safety
instructions periodically.
Careless or improper use of any
cut-off machine may cause serious or
fatal injury.
Have your STIHL dealer show you
how to operate your cut-off machine.
Observe all applicable local safety
regulations, standards and ordinances.
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Minors should never be allowed to use a
cut-off machine. Bystanders, especially
children and animals should not be
allowed in the area where a cut-off
machine is in use. Never let the cut-off
machine run unattended.
Do not lend or rent your cut-off machine
without the Owner’s Manual. Be sure
that anyone using your cut-off machine
understands the information contained
in this manual. Employers should estab-
lish a training program for operators of
gasoline powered, hand held portable,
cutt-off machines to assure safe oper-
ation of these machines. These safety
precautions and warnings apply to the
use of all STIHL CutquiksTM.
Different models may have different
parts and controls. See the appropriate
section of your owner’s manual for a
description of the controls and function
of the parts of your model cut-off
machine.
Safe use of a cut-off machine involves
- the operator
- the cut-off machine
- the use of the cut-off machine.
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You must be in good physical condition
and mental health and not under the
influence of any substance (drugs.
alcohol, etc.) which might impair vision,
dexterity or judgement. Do not operate a
cut-off machine when you are fatigued.
Be alert - if you get tired while operating
your cut-off machine, take a break, tired-
ness may result in loss of control.
Working with any cut-off machine can be
strenuous. If you have any condition that
might be aggravated by strenuous work,
check with your doctor before operating
a cut-off machine.
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Prolonged use of cut-off machines (or
other machines) exposing the operator
to vibrations may produce whitefinger
disease (Raynaud’s phenomenon) or
carpal tunnel syndrome. These
conditions reduce the hand’s ability to
feel and regulate temperature, produces
numbness and burning sensations and
cause nerve and circulation damage and
tissue necrosis. All factors which contri-
bute to whitefinger disease are not
known, but cold weather, smoking and
diseases or physical conditions that
affect blood vessels and blood transport,
as well as high vibration levels and long
periods of exposure to vibration are
mentioned as factors in the development
of whitefinger disease. In order to
reduce the risk of whitefinger disease
and carpal tunnel syndrome, please
note the following:
- Most STIHL cut-off machine models
are available with an anti-vibration
("AV") system designed to reduce
the transmission of vibrations
created by the engine to the
operator’s hands. An AV system is
recommended for those persons
using cut-off machines on a regular
or sustained basis.
- Wear gloves and keep your hands
warm.
- Keep the AV system well maintained.
A cut-off machine with loose
components or with damaged or
6DIHW\3UHFDXWLRQV
76

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

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

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

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

might catch fire and cause serious or
fatal injury.
Always make sure that the fuel cap is
tightened securely. Check for fuel
leakage while refueling and during
operation. If a fuel leak is suspected,
do not start or run the engine until leak is
fixed and spilled fuel has been wiped
away.
:DUQLQJ
Unit vibrations can
cause an improperly
tightened fuel cap to
loosen or come off and
spill quantities of fuel.
In order to reduce risk of fuel spillage
and fire, tighten fuel cap by hand with as
much force as possible.
The screw driver end of the STIHL
combination wrench or other similar tool
can be used as an aid in tightening
slotted fuel caps.
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Your cut-off machine is a one-person
tool. Do not allow otherpersons to be
near the cut-off machine. Start and
operate your cut-off machine without
assistance. For specific starting instruc-
tions, see the appropriate section of your
owner’s manual.
Do not drop start. This method is very
dangerous because you may loose
control of the cut-off machine.
Place the cut-off machine on firm ground
or other solid surface in an open area.
Maintain a good balance and secure
footing. Be absolutely sure that the
cutting wheel is clear of you and all other
obstructions and objects, including the
ground; because when the engine starts
at starting-throttle, engine speed will be
fast enough for the clutch to engage
V-belt pulley and turn the wheel. Never
attempt to start the cut-off machine
when the abrasive wheel is in a cut.
When you pull the starter grip, don’t
wrap the starter rope around your hands.
Do not allow the grip to snap back, but
guide the starter rope slowly back to
permit the rope to rewind properly.
Failure to follow this procedure may
result in injuries to hand or fingers and
may damage the starter mechanism.
Always stop the engine and be sure the
wheel has stopped rotating before
setting down the cut-off machine.
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Operate the cut-off machine under good
visibility and daylight conditions only.
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Your cut-off machine
produces poisonous
exhaust fumes as soon
as the combustible
engine is running. These
gases (e.g. carbon monoxide) may be
colorless and odorless.
To reduce the risk of serious or fatal
injury from breathing toxic fumes, never
run the cut-off machine indoors or in
poorly ventilated locations. Ensure
proper ventilation when working in
trenches or other confined areas.
002BA058 KN
76 

Never use the cut-off machine with one
hand. Your STIHL cut-off machine is
designed for hand-held use or operation
on a cut-off machine cart. Cutting with
your cut-off machine resting on the
ground or other surface can cause
excessive wear to the bracket designed
to protect the bottom of the tank
housing. Loss of fuel and personal injury
from fire may result. Replace damaged
or badly worn brackets immediately.
Grip: Always hold the cut-off machine
firmly with both hands when the engine
is running. Place your left hand on front
handle bar and your right hand on rear
handle and throttle trigger.
Left-handed users should follow this
instruction too.
Wrap your fingers tightly around the
handles, keeping the handles cradled
between your thumbs and forefingers.
Make sure your cut-off machine handles
and grip are in good condition and free
of moisture, pitch, oil or grease.
Avoid standing in direct line with the
wheel.
:DUQLQJ
Take extreme care in wet and freezing
weather (rain, snow, ice). Clear the area
where you are working.
:DUQLQJ
Avoid stumbling on obstacles and watch
out for holes or ditches. Be extremely
cautious when working on slopes or
uneven ground.
:DUQLQJ
Never operate the cut-off machine with
the starting-throttle lock engaged as this
does not permit proper control of the
speed of the unit and may lead to
serious injury.
:DUQLQJ
Sparks from cutting metal
can burn or cause cloth-
ing to catch fire. Don’t use
a cut-off machine on flam-
mable ground. Always direct sparks
away from the operator or any flamm-
able surroundings.
:DUQLQJ
To reduce the risk of injury from fire,
do not cut into any pipe, drum or other
container without first insuring that it
does not contain volatile or flammable
substance.
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The wheel guard is adjustable. It is
extremely important that the wheel
guard is in place and set to suit the type
of work and your stance. The guard
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
002BA061 KN
002BA059 KN
002BA060 KN
 76

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

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

10. Do not cut above shoulder height.
11. Use your cut-off machine for abrasive
only. It is not designed for prying or
shoveling away any objects.
12. Do not grind on side of the abrasive
wheel.
13. Do not twist, thrust, knock or drop the
machine. This can cause damage
to the wheel.
14. Be especially alert for reactive forces
when abrasive with the front of the
wheel.
15. Be alert to shifting of the work piece
or anything that could cause the cut
to close and pinch the wheel.
16. Release the pressure on the
cut-off machine as you reach the
end of the cut. Too much pressure
may cause the operator to lose
control of the cut-off machine when
the abrasive wheel completes the
cut. The abrasive wheel may con-
tact the operator or strike some
foreign object and shatter.
17. Use extreme caution when
re-entering a cut and do not turn
the wheel at an angle or push the
wheel into the cut as this may result
in a pinching of the wheel.
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RIWKH&XW2II0DFKLQH
Never operate a cut-off machine that is
damaged, improperly adjusted or not
completely or securely assembled.
Follow the maintenance and repair
instructions in the appropriate section of
your owner’s manual.
Use only STIHL replacement parts for
maintenance and repair. Use of parts
manufactured by others may cause
serious or fatal injury.
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Always stop the engine and make sure
that the wheel is stopped before doing
any maintenance or repair work or
cleaning the cut-off machine. Do not
attempt any maintenance or repair work
not described in your owner’s manual.
Have such work performed at your
STIHL service shop only.
Clean grinding dust after finishing work.
Empty the fuel tank before storing for
longer than a few days.
Fuel may only be stored in correctly
labeled and approved containers.
Avoid direct skin contact and do not
in-hale the petrol vapours.
Keep the handles dry, clean and free of
oil and fuel.
Tighten all nuts, bolts and screws except
the carburetor adjustment screws after
each use.
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RIWKHHPLVVLRQFRQWUROGHYLFHVDQG
V\VWHPVPD\EHSHUIRUPHGE\DQ\
QRQURDGHQJLQHUHSDLUHVWDEOLVKPHQW
RULQGLYLGXDO+RZHYHULI\RXFODLP
ZDUUDQW\IRUDFRPSRQHQWZKLFKKDV
QRWEHHQVHUYLFHGRUPDLQWDLQHGSUR
SHUO\RULIQRQDSSURYHGUHSODFHPHQW
SDUWVZHUHXVHG67,+/PD\GHQ\
ZDUUDQW\
002BA062 KN
76 

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Never test the ignition system with
ignition wire terminal removed from
spark plug or with unseated spark plug,
since uncontained sparking may cause
a fire.
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To reduce the risk of fire and burn injury,
use only spark plugs authorized by
STIHL. Always press spark plug boot
snugly onto spark plug terminal of the
proper size. (Note: If terminal has
detachable SAE adapter nut, it must be
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.
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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
your cut-off machine if the screen is
missing or damaged.
Store spare wheels on a flat surface in a
dry place preferably at a constant
temperature where there is not risk of
frost, preferably at a constant
temperature. Store cut-off machine in a
high or locked place, away from children.
Do not store a cut-off machine with a
wheel mounted on the machine.
For any maintenance please refer to the
maintenance chart DQGWRWKHZDUUDQW\
VWDWHPHQW near the end of this manual.
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For periods of about 3 months or longer:
•Drain and clean the fuel tank.
•Run engine until carburetor is dry -
this helps prevent the carburetor
diaphragms sticking together.
•Remove the abrasive wheel.
•Thoroughly clean the machine -
pay special attention to the
cylinder fins and air filter.
•Store the machine in a dry, high
or locked location - out of the
reach of children and other
unauthorized persons.
 76

TS 350 15
Mounting the Arbor Bearing and Guard
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.
Top: V-belt in position for inboard mounting
Center: Tightening hex. head screw
Bottom: V-belt in position for outboard mounting

16 TS 350
Top: Inserting hex. head screw
Bottom: Bearin
g
mounted outboard
Tensioning the V-belt
Turning eccentric adjuster to tension V-belt
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).
The V-belt is correctly tensioned if it can be depressed
slightly (5-10 mm/ 3/16-3/8") with moderate thumb pressure.
Overtensioning of the V-belt will accelerate wear.
On a new machine, or if a new V-belt has been fitted, it is
advisable to check V-belt tension after about 1 operating
hour and correct it if necessary.
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
(5) to and fro to ease insertion. The assembly sequence is
otherwise as for "Inboard mounting".
When the cutting wheel is mounted outboard the wheel
guard does not have the full 360° adjustment since the
movement of the adjusting lever is restricted by the
handlebar mounting, i. e. reduced by about 20°.

TS 350 17
On the USA version a stop (1) is attached to the cut-off-
saw's bearing plate.
The rubber buffer (2) of this stop projects through the
flange of the abrasive wheel guard so that its adjustment
is limited to the range shown (see illustration). This
prevents the guard being turned too far.
It is necessary to take out the mounting screws (3) and
remove the rubber buffer (2) to turn the guard through
approx. 180° when the abrasive wheel is fitted on the out-
board side of the cast arm. Then turn the guard to the
required position and refit the rubber buffer on the stop.
Abrasive Wheels
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.
Abrasive wheels are heat sensitive. Always store your
cutoff-saw in a place where it is not exposed to direct
sunlight or other sources of heat.
Store spare cutting wheels in a dry place where there is
no risk of frost, preferably at a constant temperature.
Your STIHL dealer stocks a range of special abrasive
wheels (3 and 6 mm / 0.12 and 0.24 in thick) for the mani-
fold applications cut-off-saw. For example, wheels for
abrasive bituminous material, gravel asphalt, stone, con-
crete, clay pipe, structural steel, highly alloyed steel, cast
iron, non-ferrous metals etc.
Limiting adjustment on
abrasive wheel guard
Adjustment range of abrasive wheel guard

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

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This engine is certified to operate on
unleaded gasoline and with the
mix ratio 50:1.
Your two-stroke engine requires a
mixture of brand-name gasoline and
quality two-stroke engine oil with the clas-
sification TC.
Use regular branded unleaded gasoline
with a minimum octane rating of
90 RON (U.S.A./Canada: pump octane
min. 89!). If the octane number of the
regular grade gasoline in your area is
lower use premium unleaded fuel.
Fuel with a lower octane rating may
result in preignition (causing "pinging")
which is accompanied by an increase in
engine temperature. This, in turn,
increases the risk of the piston seizure
and damage to the engine.
The chemical composition of the fuel is
also important. Some fuel additives not
only detrimentally affect elastomers
(carburetor diaphragms, oil seals, fuel
lines etc.), but magnesium castings as
well. This could cause running problems
or even damage the engine. For this
reason it is essential that you use only
name branded fuels!
Use only STIHL two-stroke engine oil or
equivalent branded two-stroke air-
cooled engine oils with the classification
TC for mixing.
We recommend STIHL 50:1 two-stroke
engine oil since it is specially formulated
for use in STIHL engines.
Do not use BIA or TCW (two-stroke
water cooled) mix oils!
Take care when handling gasoline.
Avoid direct contact with the skin and
avoid inhaling fuel vapour.
The canister should be kept tightly
closed in order to avoid any moisture
getting into the mixture.
The fuel tank and the canister in which
fuel mix is stored should be cleaned
from time to time.
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Only mix sufficient fuel for a few days
work, not to exceed 3 months of storage.
Store in approved safety fuel-canisters
only. When mixing, pour oil into the
canister first, and then add gasoline.
Gaso- Oil (STIHL 50:1 or
line equivalent branded TC oils)
US gal. US fl.oz
1 2.6
2 1/2 6.4
512.8
Dispose empty mixing-oil canisters only
at authorized disposal locations.
Before fueling, clean the filler cap
and the area around it to ensure that no
dirt falls into the tank.
Always thoroughly shake the mixture in
the canister before fueling your machine.
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In order to reduce the risk of burns or
other personal injury from escaping gas
vapor and fumes, remove the fuel filler
cap carefully so as to allow any pressure
build-up in the tank to release slowly.
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After fueling, tighten fuel cap
as securely as possible by hand.
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Change the fuel pick up body every year.
Before storing your machine for a long
period, drain and clean the fuel tank and
run engine until carburetor is dry.
A
004 KN
76 