Chain Tension - McCulloch CS 330 Manuel D'utilisation

Clutch
Cover
Adjusting Pin
Lower
Hole
12. Install bar nuts and finger tighten only.
Once the chain is tensioned, you will need
to tighten bar nuts.

CHAIN TENSION (

with chain already installed)
WARNING:
when handling chain. The chain is sharp and
can cut you even when it is not moving.
NOTE:
When adjusting chain tension, make
sure the bar nuts are finger tight only. Attempt-
ing to tension the chain when the bar nuts are
tight can cause damage.
Checking the tension:
Use the screwdriver end of the chain adjust-
ment tool (bar tool) to move chain around guide
bar. If the chain does not rotate, it is too tight. If
the chain is too loose, it will sag below the bar.
Adjusting
Bar Nuts
Guide Bar
Including units
Wear protective gloves
Guide
Bar
Chain Adjustment
Tool
(Bar Tool)
Screw
Adjusting the tension:
Chain tension is very important. Chains stretch
during use. This is especially true during the
first few times you use your saw. Always check
chain tension each time you use and refuel your
saw.
1. Loosen bar nuts until they are finger tight
against the clutch cover.
2. Turn adjusting screw clockwise until chain
solidly contacts bottom of guide bar rail.
Adjusting
Screw
3. Using bar tool, roll chain around guide bar
to ensure all links are in bar groove.
4. Lift up tip of guide bar to check for sag. Re-
lease tip of guide bar, then turn adjusting
1
screw / turn clockwise. Repeat until sag
4
does not exist.
Adjusting Screw -
5. While lifting tip of guide bar, tighten bar
nuts securely with the bar tool.
6. Use the screwdriver end of the bar tool to
move chain around guide bar.
7. If chain does not rotate, it is too tight. Slight-
ly loosen bar nuts and loosen chain by turn-
ing the adjusting screw
clockwise. Retighten bar nuts.
8. If chain is too loose, it will sag below the
guide bar. DO NOT operate the saw if the
chain is loose.
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 an upright position), but the chain still
moves.
WARNING:
a loose chain, the chain could jump off the
guide bar and result in serious injury.
WARNING:
and after use. Do not touch the muffler or allow
combustible material such as dry grass or fuel
to do so.
1
/ Turn
4
Bar Nuts
1
/ turn counter-
4
If the saw is operated with
Muffler is very hot during