MAINTENANCE
REPLACing Bar and Chain
See Figures 24 - 28.
warning:
Remove the battery pack from the chain saw and make sure the chain has stopped before you do any work on the saw. Failure to do so may result in accidental starting and possible serious injury.
WARNING:
The safety instructions in this section are to protect the user from serious personal injury.
CAUTION:
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 main- tenance to the chain to avoid possible serious lacerations.
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 the 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 bar stud is in the long slot of the bar.
NOTE: When placing the bar on the bar stud, assure that the adjusting pin is in the chain ten- sion pin hole.
Recommended Bar and Chain Combinations
Bar Part Number - 10 in.
671256002 or 671834007
Chain Part Number
6958301 or 690583002
Replace the chain cover, 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 mounting 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.
Chain Tension
See Figures 29 - 30.
Stop the engine before setting the chain tension. Make sure the guide bar screw is loosened to finger tight, turn the chain tensioner clockwise to tension the chain. Refer to Replacing Bar and Chain earlier in this manual for additional information.
17 - English