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10 Assembling the Chain Saw
► Direct the drive links into the groove of the guide bar (6,
arrow) while turning the side chain tensioner (3) clockwise
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.
► Turn the nuts clockwise until the chain sprocket cover is
firmly attached to the saw.
10.2.2 Removing the Guide Bar and Chain
► Unscrew the nuts.
► Remove the chain sprocket cover.
► Turn the side chain tensioner counter-clockwise until it
stops and the chain is loose.
► Remove the guide bar and chain.
NOTICE
The top and bottom of the guide bar are symmetrical, 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.
10.3 Tensioning the Chain
WARNING
To reduce the risk of severe personal injury from chain
derailment, check chain tension frequently, @ 5.6. 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:
► Shut off the engine, @ 15.
► Loosen the nuts (1).
► Disengage the chain brake, @ 12.2.
► Lift the guide bar tip.
► Turn the side chain tensioner (2) clockwise to tighten the
chain.
The chain is properly adjusted when 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) 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 side chain tensioner
counter-clockwise 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 nuts 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).
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