explosion in an easily combustible or explo‐
sive environment. This can result in serious or
fatal injuries and damage to property.
► Use the spark plugs described in this instruc‐
tion manual.
► Insert and tighten down the spark plug.
► Connect the spark plug boot and press it
down firmly.
■ The saw can be damaged if it is run on a fuel
mixture consisting of unsuitable gasoline or an
unsuitable two-stroke engine oil or if an incor‐
rect mix ratio of gasoline and two-stroke
engine oil is used.
► Mix the fuel as described in this instruction
manual.
■ The mixture of gasoline and two-stroke engine
oil can separate if it is stored for a long period.
The saw can be damaged if it is used with a
fuel mix that has separated.
► Before refueling the saw: Thoroughly mix the
fuel.
► Use a mixture of gasoline and two-stroke
engine oil that is not older than 30 days
(STIHL MotoMix: 2 years).
4.8
Working
4.8.1
Sawing
WARNING
■ Always work within calling distance of others
► in case help is needed.
■ If the engine is not started properly, the user
may lose control of the chainsaw. This can
result in serious injuries.
► Start the engine as described in this instruc‐
tion manual.
► If the saw chain is touching the ground or
objects: Do not start the engine.
■ The user cannot concentrate on the work in
certain situations. The user can lose control of
the saw, trip or fall and be seriously injured.
► Work calmly and carefully.
► If light and visibility are poor: Do not use your
saw.
► Operate the chain saw alone.
► Do not work above shoulder height.
► Watch out for obstacles.
► Stand on the ground while working and keep
a good balance. If it is necessary to work at
heights: Use a lift bucket or a safe platform.
► If you begin to feel tired: Take a break.
■ Exhaust gas is produced when the engine is
running. Breathing in exhaust gas can have
toxic effects.
► Avoid inhaling exhaust gas.
► Operate the chainsaw is a well ventilated
location.
► In the event of nausea, headache, visual dis‐
turbances, problems with hearing or dizzi‐
ness: Stop work and seek medical advice.
■ The user’s ability to hear and assess noises is
restricted when wearing hearing protection
with the engine running.
► Work calmly and carefully.
■ The user will not be able to control the chain‐
saw properly if it is operated with the Master
Control lever in the position . This can result
in serious injuries.
► Move the Master Control lever to position .
► Start the engine as described in this instruc‐
tion manual.
■ Do not accelerate the engine with the chain
brake engaged since this can damage the
chain brake.
► Disengage the chain brake before you start
cutting.
■ The rotating saw chain can cut the operator.
This can result in serious injuries.
► Do not touch the rotating saw chain.
► If the saw chain is blocked by an object: Shut
off the engine and engage the chain brake.
Then remove the object causing the block‐
age.
■ The rotating chain becomes hot and expands.
If the chain is not lubricated sufficiently and
retensioned, it can come off the guide bar or
break. This can result in serious injuries and
damage to property.
► Use special chain oil.
► Check chain tension regularly during cutting
work. If chain tension is insufficient: Tension
the chain.
■ If the behavior of the saw changes during
operation or feels unusual, it may no longer be
in a safe condition. This can result in serious
injuries and damage to property.
► Stop work and contact your STIHL dealer for
assistance.
■ Saw vibrations may occur during operation.
► Wear gloves.
► Take regular breaks.
► If signs of circulation problems occur: Seek
medical advice.
■ Sparks may occur if the rotating chain makes
contact with a hard object. Sparks may cause
a fire in an easily combustible location. This
can result in serious or fatal injuries and dam‐
age to property.
► Do not work in an easily combustible loca‐
tion.
4 Safety Precautions
English
0458-890-8321-B. VA0.A21.
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