Homelite UT43122 User Manual - Page 23

Warning, Adjusting The Chain Tension

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MAINTENANCE n Remove the bar and chain from the mounting surface. n Remove the old chain from the bar. n 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 backwards, turn the loop over. n Place the chain drive links into the bar groove as shown. NOTE: Make certain of direction of chain. n Position the chain so there is a loop at the back of the bar. n Hold the chain in position on the bar and place the loop around the sprocket. n Fit the bar flush against the mounting surface so that the bar studs are in the long slot of the bar. WARNING: When placing the bar on the bar studs, ensure that the chain tensioning pin is in the chain tension pin hole. Failure to properly place the chain tensioning pin in the chain tensioning pin hole could cause the chain to come loose, resulting in serious personal injury. FLATS ON DRIVE LINKS Fig. 32 Fig. 33 Fig. 34 n Replace the chain cover. n Replace the chain cover lock knob; rotate knob clockwise to tighten. The bar should still be free to move for tension adjustment. n Remove all slack from the chain by turning the chain tensioning knob clockwise until the chain seats snugly against the bar with the drive links in the bar groove. n Lift the tip of the guide bar up to check for sag. n Release the tip of the guide bar and turn the chain tensioning knob 1/2 turn clockwise. Repeat this process until sag does not exist. n Hold the tip of the guide bar up and tighten the chain cover lock knob. ≈ .050 in. Fig. 35 chain tensioning knob 1/4 turn counterclockwise. Lift the tip of the guide bar up and retighten the chain cover lock knob. Ensure that the chain will rotate without binding. ADJUSTING THE CHAIN TENSION See Figures 34 - 35. WARNING: 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. NOTE: If chain is too tight, it will not rotate. Loosen the chain cover lock knob slightly and turn the Never touch or adjust the chain while the motor is running. The saw chain is very sharp. Always wear protective gloves when performing maintenance on the chain. Page 23 - English

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Page 23
— English
MAINTENANCE
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
backwards, turn the loop over.
Place the chain drive links into the bar groove as
shown.
NOTE:
Make certain of direction of chain.
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.
Fit the bar flush against the mounting surface so
that the bar studs are in the long slot of the bar.
WARNING:
When placing the bar on the bar studs, ensure
that the chain tensioning pin is in the chain ten-
sion pin hole. Failure to properly place the chain
tensioning pin in the chain tensioning pin hole
could cause the chain to come loose, resulting
in serious personal injury.
Replace the chain cover.
Replace the chain cover lock knob; rotate
knob
clockwise to tighten. The bar should still be free
to move for tension adjustment.
Remove all slack from the chain by turning the
chain tensioning knob 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 knob 1/2 turn clockwise.
Repeat this process until sag does not exist.
Hold the tip of the guide bar up and tighten the
chain cover lock knob.
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.
NOTE:
If chain is too tight, it will not rotate. Loosen
the chain cover lock knob slightly and turn the
Fig. 32
Fig. 33
Fig. 34
FLATS ON DRIVE LINKS
Fig. 35
≈
.050 in.
chain tensioning knob 1/4 turn counterclockwise.
Lift the tip of the guide bar up and retighten the
chain cover lock knob. Ensure that the chain will
rotate without binding.
ADJUSTING THE CHAIN TENSION
See Figures 34 - 35.
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 on the chain.