Tensioning The Chain - McCulloch CS 42S Operator's Manual

Turning the screw will move the adjusting pin up and
down the screw. Locate this adjusting pin before you
begin mounting the bar onto the saw. See following
illustration.
1. Turn the adjusting screw by hand counterclockwise
until the adjusting pin is positioned between the
should allow the adjusting pin to be near the
correct position.
2. Slide guide bar with chain on bar bolts until guide
bar stops against clutch drum sprocket. Cutters
must face in the direction of rotation.
3.
on the drive sprocket and that the chain is in the
groove on the bar.
4. Fit the clutch cover and insert the adjusting pin in
the cut-out in the bar.
5.

TENSIONING THE CHAIN

(Including units with chain already installed)
a WARNING: If the saw is operated with
a loose chain, the chain could jump off
the guide bar and result in serious injury
to the operator and/or damage the chain
making it unusable. If the chain jumps off
the guide bar, inspect each drive link for
damage. Damaged chain must be repaired
or replaced.
Chain tension is very important. Chains stretch during
you use your saw. Always check chain tension each
time before you start the chain saw.
A correctly tensioned chain ensures good cutting
performance and long life.
CHECKING THE TENSION
Use the screwdriver end of the chain adjustment tool
does not rotate, it is too tight. If the chain is too loose,
it will sag below the bar.
NOTE: The chain is tensioned correctly when
the weight of the chain does not cause it to sag
below the guide bar (with the chain saw sitting in
around the guide bar.
ADJUSTING THE TENSION
1.
the clutch cover.
NOTE: When adjusting chain tension, make sure
tension the chain when the bar nuts are tight can
cause damage.
2. Turn adjustment screw clockwise until chain solidly
contacts bottom of guide bar rail.
Chain tensioning—side adjust models:
Chain tensioning—front adjust models:
3. Hold up the bar tip and tighten the bar nuts with
the combination tool.
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