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• Always clean out wood chips, saw dust,
and dirt from the guide bar groove when
replacing the saw chain.
Replacing the bar and chain
18.2
WARNING: Before performing any
maintenance, make sure that the battery
pack is removed. Failure to heed this
warning could result in serious personal
injury.
WARNING: Always wear gloves when
handling the bar and chain; these
components are sharp and may contain
burrs.
WARNING: Never touch or adjust the chain
while the motor is running. The saw chain
is very sharp; always wear protective gloves
when performing maintenance to the chain.
NOTICE: When replacing the guide bar and
chain, always use the specified bar and
chain combination listed in the later section:
"Recommended Bar and Chain for this
Chain Saw".
Disassembling the Worn Bar and
18.3
Chain
a. Remove the battery, allow the saw to
cool and tighten the oil tank cap.
b. Position the chain saw on its side on a
firm, flat surface, so that the side cover
is facing upwards (See Fig. W).
Wear gloves. Remove the side cover by
c.
turning the side cover knob counter-
clockwise (See Fig. W). Clean the side
cover with a dry cloth.
d. Turn the chain-tensioning knob towards
the front handle as far as it will go (See
Fig. W). Remove the bar and chain from
the mounting surface. Remove the worn
chain from the bar.
Guide plate chain cover can tie the
e.
plate clockwise, disassemble the plate
anticlockwise. (See Fig. X).
NOTICE: This is a good time to inspect
the drive sprocket for excessive wear or
damage.
Assembling The New Bar and Chain
18.4
a. Remove the battery, allow the saw to
cool and tighten the oil tank cap.
b. Lay the new saw chain in a loop on a
flat surface and straighten any kinks
(See Fig. Y).
Place the chain drive links into the guide
c.
bar groove. Position the chain so there
is a loop at the back of the guide bar (See
Fig. Z).Hold the chain in position on the
guide bar and place the loop around the
sprocket of the power head.
NOTICE: Small directional arrows are
engraved in the saw chain (See Fig. AA).
Another directional arrow is molded into the
housing (See Fig. AA). When looping the
saw chain onto the sprocket, make sure that
the direction of the arrows on the saw chain
will correspond to the direction of the arrow
on the housing. If they face in opposite
directions, turn over the saw chain and
guide bar assembly (See Fig. AB).
d. Place the guide bar on the mounting
surface by sliding the guide bar slot
over the alignment flanges, making sure
that the tension adjusting pin is inserted
in the lower hole in the tail of the bar (See
Fig. AB).
Replace the side cover and lightly
e.
tighten the side cover knob by turning
it clockwise. The bar must be free to
move for tension adjustment.
NOTICE: To extend the guide bar life, invert
the bar occasionally.
CAUTION: The saw chain must be properly
tensioned before using.
Remove all the slack from the chain
f.
by turning the chain-tensioning knob
clockwise until the chain seats snugly
against the guide bar with the drive links
in the guide bar groove.
g. Lift the tip of the guide bar up to check
for sag (See Fig. AC). Release the tip
of the guide bar and turn the chain-
tensioning knob once clockwise. Repeat
this process until the sag is eliminated.
h. Hold the tip of the guide bar up and
tighten the side cover knob securely.
The chain is correctly tensioned when
there is no sag on the underside of the
guide bar and the chain is snug, but it
can be turned by hand without binding.
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