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14.
Remove all slack from the chain using the chain
tensioning screw. Place a slotted screwdriver in the
slot and turn clockwise until the chain seats snugly
against the bar with the drive links in the bar groove.
CHAIN TENSIONING
SCREW
MAINTENANCE
Fig. 49
Fig. 50
Fig. 51
15.
Lift the tip of the guide bar up to check for sag.
16.
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.
17.
Hold the tip of the guide bar up and tighten the bar
mounting nuts securely.
The 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. Ensure that the chain
brake is not set.
Note:
If chain is too tight, it will not rotate. Loosen the bar
nuts slightly and turn the tension adjuster 1/4 turn counter-
clockwise. Lift the tip of the guide bar up and retighten the
bar mounting nuts securely. Ensure that the chain will
rotate without binding.
CHAIN TENSIONING
SCREW
Fig. 48
UT10570
UT10560
UT10550
