MAINTENANCE
7.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.
8.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.
9.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.
10.Hold the tip of the guide bar up and tighten the bar mounting screw securely.
11.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.
12.Place the hex key back into the storage area.
CHAIN
TENSIONING
SCREW
Fig. 27
24
LIFT THE TIP OF THE GUIDE BAR UP TO CHECK FOR SAG
Fig. 28
HEX KEY
Fig. 29