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11 Assembling the Chain Saw
11.4 Lubricating the Saw Chain and Guide Bar
11.4.1 Bar and Chain Lubricant
WARNING
Never operate your saw without bar and chain lubrication. If
the chain runs dry, the cutting attachment will be damaged
beyond repair within a very short time. A damaged chain
may break, resulting in severe or fatal personal injury.
Always check chain lubrication and the oil level in the tank
before starting work and periodically during work.
WARNING
Never use waste oil to lubricate your STIHL saw chain and
guide bar. Repeated contact with waste oil can cause skin
cancer. Moreover, waste oil is environmentally harmful.
Bar and chain oil lubricates and cools the rotating saw chain.
The service life of the chain and guide bar depends on the
quality of the lubricant. It is therefore essential to use only a
specially formulated chain lubricant.
► For automatic and reliable lubrication of the chain and
guide bar, use only an environmentally compatible quality
chain and bar lubricant. STIHL recommends using rapidly
biodegradable STIHL BioPlus.
NOTICE
Biodegradable chain oil must be resistant to aging, since it
will otherwise quickly turn to resin. This results in hard
deposits that are difficult to remove, especially in the area of
the chain drive and chain. It may even cause the oil pump to
seize.
NOTICE
Waste oil does not have the necessary lubricating properties
and is unsuitable for chain lubrication.
11.4.2 Filling the Chain Oil Tank
► Refill the oil tank when the oil level reaches the "OIL min"
mark (1).
If the oil level in the tank does not go down, there may be a
problem in the oil supply system.
► Have the oil supply system checked by an authorized
STIHL servicing dealer before further use.
To fill the chain oil tank:
► Switch off the chain saw, @ 14.2.
► Engage the chain brake, @ 12.1.
► Disconnect the chain saw from the power supply.
► Position the chain saw on a level surface with the oil filler
cap facing upwards.
► Clean the area around the oil filler cap with a slightly
dampened cloth.
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