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14 Assembling the Chain Saw
► Direct the drive links into the groove of the
guide bar (arrow) while turning the tensioning
gear (4) counterclockwise until it stops.
The guide bar and chain must be firmly and
securely mounted on the saw.
► Fit the sprocket cover on the saw so that it is
flush with the housing.
► When fitting the chain sprocket cover, the
teeth of the adjusting wheel and the tensioning
gear must mesh.
► If necessary, turn the adjusting wheel slightly
until the chain sprocket cover sits flush against
the housing.
► Turn the wingnut clockwise until the chain
sprocket cover is firmly attached to the saw.
► Close the handle of the wingnut.
14.2.2
Removing the Guide Bar and Chain
► Raise the handle of the wingnut to open and
then turn the wingnut counterclockwise until
the chain sprocket cover can be removed.
► Remove the chain sprocket cover.
► Turn the tensioning gear counterclockwise
until it stops and the chain is loose.
► Remove the guide bar, including the tension‐
ing gear and chain.
NOTICE
■ The top and bottom of the guide bar are sym‐
metrical, and the bar may be mounted with the
printing facing up or down. Flipping the guide
bar each time the chain is sharpened or
changed will help reduce uneven wear and
improve its service life.
14.3
Tensioning the Chain
WARNING
■ To reduce the risk of severe personal injury
from chain derailment, check chain tension
frequently,
5.5. At operating temperatures,
the chain stretches and sags. New chain tends
to stretch more than used chain. Tension the
chain so that the drive links cannot come out
of the groove on the underside of the guide
bar.
To properly tension the chain:
► Switch off the chain saw,
► Engage the chain brake,
► Remove the battery,
0458-022-8201-A
17.2.
15.1.
16.2.
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► Raise the handle of the wingnut (1).
► Turn the wingnut counterclockwise twice or
until the chain is loose.
► Disengage the chain brake,
► Lift the guide bar tip.
► Turn the adjusting wheel (2) clockwise to
tighten the chain.
The chain is properly adjusted when the dis‐
tance (a) between the underside of the guide
bar and the chain is within 0.04 in. (1 mm) and
0.08 in. (2 mm) and can still be pulled easily
along the bar by hand. Always wear gloves
when handling the chain.
► If the chain cannot be moved along the guide
bar, it is too tight.
– Reduce the tension by turning the adjusting
wheel counterclockwise until the chain can
move freely along the guide bar.
– Ensure that the drive links remain in the
groove and that the distance (a) between
the underside of the guide bar and the chain
is within 0.04 in. (1 mm) and 0.08 in.
(2 mm).
► Once the chain is properly tensioned, lift the
guide bar tip and tighten the wingnut by hand
to secure the chain sprocket cover.
► Finally, ensure that the distance (a) between
the underside of the guide bar and the chain is
within 0.04 in. (1 mm) and 0.08 in. (2 mm).
NOTICE
■ Always release tension on the chain after fin‐
ishing work. The chain contracts as it cools
down. If it is not slackened, it can damage the
drive shaft and bearings. Properly re-tension
the chain before using the saw again.
English
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15.2.
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