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CAUTION:
Always wear gloves when handling the bar and chain;
these components are sharp and may contain burrs.
„ Remove the battery pack before you do any work on the
chain saw.
„ Remove the hex key from the storage area and use it to
remove the chain cover screw, washer and chain cover
from the chain saw.
„ Remove the bar and chain from mounting surface.
„ Remove the old chain from the bar.
„ Lay out the new saw chain in a loop and straighten any
kinks. The cutters should face in the direction of chain
rotation. If they face the opposite direction, turn the loop
over.
„ Place the chain drive links into the bar groove. Position
the chain so there is a loop at the back of the bar. Hold
the chain in position on the bar and place the loop around
the sprocket of the chain saw. Fit the bar flush against
the mounting surface so that the post is in the long slot
of the bar.
„ Replace the chain cover.
WARNING:
When placing the chain cover onto the bar, ensure the
chain tensioning pin is in the chain tension pin hole. Fail-
ure to properly place the chain tensioning pin in the chain
tension pin hole could cause the chain to come loose,
resulting in serious personal injury.
„ Replace the washer and chain cover screw. Tighten the
chain cover screw finger tight only. The bar must be free
to move for tension adjustment.
„ Remove all the slack from the chain by turning the chain
tensioning screw clockwise until the chain seats snugly
against the bar with the drive links in the bar groove.
„ Lift the tip of the guide bar up to check for sag. Release
the tip of the guide bar and turn the chain tensioning
screw 1/2 turn clockwise. Repeat this process until sag
does not exist.
„ Hold the tip of the guide bar up and tighten the bar mount-
ing screw securely.
„ Chain is correctly tensioned when there is no sag on the
underside of the guide bar, the chain is snug, but it can
be turned by hand without binding.
NOTE: If chain is too tight, it will not rotate. Loosen the
chain cover screw slightly and turn tension adjuster 1/4
turn counterclockwise. Lift the tip of the guide bar up
and retighten chain cover screw securely. Assure that
the chain will rotate without binding.
„ Place the hex key back into the storage area.
MAINTENANCE
ADJUSTING CHAIN TENSION
See Figures 29 - 30.
WARNING:
Shut off the motor, wait for all moving parts to stop, and
remove the battery pack. Never touch or adjust the chain
while the engine is running. The saw chain is very sharp.
Always wear protective gloves when performing mainte-
nance on the chain. Failure to follow these instructions
can result in serious personal injury.
Proper chain tension is critical to the performance of your
chain saw. Always check chain tension before using the saw
and periodically until the work is complete.
A cold chain is correctly tensioned when there is no slack on
the underside of the guide bar. The chain should be snug,
but still able to be turned by hand without binding.
A warm chain is correctly tensioned when the flats on the tie
straps hang approximately .050 inches out of the bar groove.
If adjustment is needed:
„ Loosen the chain cover screw to finger tight.
„ Raise the tip of the guide bar and continue to hold up
until the end of this procedure.
„ Turn the chain tensioning screw clockwise until the flats
on the tie straps of the chain contact the bar, making sure
the drive links are seated inside the bar groove.
„ Retighten the chain cover screw securely.
„ Release the tip of the guide bar and verify the chain is now
correctly tensioned using the guidelines above.
Note: If the chain is too tight and will not rotate, loosen
the chain cover screw slightly, then turn the chain tension-
ing screw 1/4 turn counterclockwise. Lift up the tip of the
guide bar, retighten the chain cover screw securely, then
verify the chain will now rotate without binding.
Note: New chains tend to stretch; check the chain ten-
sion frequently and adjust as needed.
NOTICE:
A chain tensioned while warm may be too tight upon
cooling. Check the "cold tension" before next use.
CHAIN MAINTENANCE
See Figures 31 - 32.
WARNING:
Remove the battery pack and make sure the chain has
stopped before you do any work on the saw to avoid
accidental starting and possible serious personal injury.
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