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► Hold the bar nose up.
► Use a screwdriver to turn the tensioning
screw (1) clockwise until the chain fits snugly
against the underside of the bar.
► While still holding the bar nose up, tighten
down the nut firmly.
► Go to "Checking Chain Tension".
A new chain has to be retensioned more often
than one that has been in use for some time.
► Check chain tension frequently – see chapter
on "Operating Instructions".
8
Checking Chain Tension
1
9913BA006 KN
► Disconnect the plug from the wall outlet.
► Wear work gloves to protect your hands.
► Disengage the chain brake: Pull the hand
guard (1) against the front handle and hold it
there – the chain brake and coasting brake are
disengaged in this position.
► The chain must fit snugly against the under‐
side of the bar and it must still be possible to
pull the chain along the bar by hand.
► If necessary, re-tension the chain.
A new chain has to be re-tensioned more often
than one that has been in use for some time.
► Check chain tension frequently – see chapter
on "Operating Instructions".
9
Chain Lubricant
For automatic and reliable lubrication of the
chain and guide bar – use only an environmen‐
tally compatible quality chain and bar lubricant.
Rapidly biodegradable STIHL BioPlus is recom‐
mended.
NOTICE
Biological chain oil must be resistant to aging
(e.g. STIHL BioPlus), 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.
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 formu‐
lated chain lubricant.
WARNING
Do not use waste oil. Renewed contact with
waste oil can cause skin cancer. Moreover,
waste oil is environmentally harmful.
NOTICE
Waste oil does not have the necessary lubricat‐
ing properties and is unsuitable for chain lubrica‐
tion.
10 Filling Chain Oil Tank
10.1
Preparations
1
9913BA007 KN
► Thoroughly clean the oil tank cap (1) and the
area around it to ensure that no dirt falls into
the tank.
► Position the machine so that the tank cap
faces up.
8 Checking Chain Tension
English
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