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► Never insert objects in the chainsaw's
openings.
► Replace worn or damaged labels.
► If you have any doubts, be sure to consult a
STIHL dealer.
4.6.2
Guide Bar
The guide bar is in a safe condition if the follow‐
ing points are observed:
– Guide bar is not damaged.
– Guide bar is not deformed.
– The minimum groove depth is maintained,
19.3.
– Bar rails are free from burrs.
– Bar groove is not pinched or splayed.
WARNING
■ If the guide bar is not in a safe condition, it can
no longer support and guide the saw chain
properly. The rotating saw chain can jump off
the guide bar. This can result in serious or
fatal injuries.
► Work only with an undamaged guide bar.
► If the groove depth is less than the mini‐
mum depth: Mount a new guide bar.
► Deburr the guide bar every week.
► If you have any queries: Contact your
STIHL servicing dealer.
4.6.3
Saw Chain
The saw chain is in a safe condition if the follow‐
ing points are observed:
– Chain is not damaged.
– Chain is properly sharpened.
– The service marks on the cutters are still visi‐
ble.
WARNING
■ If components do not comply with safety
requirements, they will no longer function
properly and safety devices may be rendered
inoperative. This can result in serious or fatal
injuries.
► Work only with an undamaged saw chain.
► Sharpen the chain properly.
► If you have any queries: Contact your
STIHL servicing dealer for assistance.
4.7
Fuel Mixture and Refueling
WARNING
■ This chainsaw requires a fuel mixture of gaso‐
line and two-stroke engine oil. Mixed fuel and
gasoline are extremely flammable. If fuel mix‐
ture or gasoline make contact with open fire or
hot objects, they can cause a fire or explo‐
6
sions. Persons may be seriously or fatally
injured and property may be damaged.
► Protect fuel mixture and gasoline from heat
and fire.
► Do not spill mixed fuel or gasoline.
► If fuel has been spilled: Wipe up fuel with a
cloth and do not attempt to start engine until
all parts of the chainsaw are dry.
► Do not smoke.
► Never refuel near a fire.
► Shut off the engine and allow it to cool
down before refueling.
► Start the engine at least 3 meters from the
fueling spot, outdoors only.
■ Inhaling fuel fumes and gasoline fumes can
have toxic effects.
► Avoid inhaling fuel fumes or gasoline
fumes.
► Refuel in a well-ventilated location.
■ The chainsaw will become hot during opera‐
tion, or in a very hot environment. Depending
on the type of fuel, altitude, ambient tempera‐
ture and the temperature of the saw, the fuel
expands and can cause a build-up of pressure
in the tank. Fuel may spray out and ignite
when the fuel tank cap is opened. The user
may be seriously injured and property damage
may occur.
► Allow the chainsaw to cool down before
opening the fuel tank cap.
► Open the fuel tank cap slowly and not all at
once.
■ Clothing that has been in contact with fuel or
gasoline will become more easy to ignite. Per‐
sons may be seriously or fatally injured and
property may be damaged.
► If your clothing comes into contact with fuel
or gasoline: Change your clothing.
■ Fuel mix, gasoline and two-stroke engine oil
can harm the environment.
► Do not spill fuel, gasoline or two-stroke
engine oil.
► Dispose of fuel mix, gasoline and two-
stroke engine oil in accordance with local
regulations and environmental require‐
ments.
■ Fuel, gasoline or two-stroke engine oil can
cause irritation if they come into direct contact
with the skin or eyes.
► Avoid contact with fuel, gasoline and two-
stroke engine oil.
► If skin contact occurs: Wash affected areas
of skin with plenty of water and soap.
► If eye contact occurs: Flush eyes with
plenty of water for at least 15 minutes and
consult a doctor.
4 Safety Precautions
0458-784-0121-C
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