McCulloch 442 - Manual (Page 7)

7
Clutch Drum
Chain
Brake
7. Carefully remove new chain from pack-
age. Prepare the chain by checking the
proper direction. Without following the il-
lustration, it is easy to place the chain on
the saw in the wrong direction. Use the
illustration of the chain to determine the
proper direction.
CUTTERS MUST FACE IN
DIRECTION OF ROTATION
Tip of
Bar
Cutters
Depth Gauge
Drive Links
8. Place chain over and behind clutch, fitting
the drive links in the clutch drum sprocket.
9. Fit bottom of drive links between the
teeth in the sprocket in the nose of the
guide bar.
10. Fit chain drive links into bar groove.
11. Pull guide bar forward until chain is snug
in guide bar groove. Ensure all drive links
are in the bar groove.
TO REPLACE CHAIN BRAKE:
1. Align arrows on chain brake by pressing
tensioning lever down to install position
(see illustration).
2. Install chain brake. Turn adjustment
knob handle clockwise until knob begins
to thread onto bolt.
3. Release tensioning lever. Chain will
tighten automatically.
4. While lifting tip of guide bar, turn adjust-
ment knob handle clockwise to clamp
bar. Tighten until bar is clamped secure-
ly. Hand tighten securely; do not use
tools to tighten!
TIGHTEN
5. Return adjustment knob handle to original
position. Ensure teeth of adjustment knob
handle are engaged with notches in the
chain brake and adjustment knob handle
is laying flat.
Teeth
Notches
CHAIN TENSION (Including units
with chain already installed)
WARNING : Wear protective gloves
when handling chain. The chain is sharp and
can cut you even when it is not moving.
It is normal for a new chain to stretch during the
first 15 minutes of operation. You should re-
check your chain tension frequently and adjust
the chain tension as required. Always check
chain tension each time you use and refuel
your saw or when any sag in the chain is noted.
1. Move ON/STOP switch to the STOP
position.
2. Make sure chain brake is disengaged
(see CHAIN BRAKE in the OPERATION
section).
IMPORTANT: Before proceeding to next
step, ensure unit is on a flat surface and in an
upright position as shown in illustration.
Chain will not tighten properly if the unit is not
in an upright position.
3. Use the chain adjustment tool (bar tool)
to move chain around guide bar to en-
sure kinks do not exist. The chain should
rotate freely.
Guide
Bar
Adjustment Knob
CHAIN SAW IN UPRIGHT POSITION
Chain Adjustment
Tool (Bar Tool)
4. Lift adjustment knob handle and turn
counterclockwise 1 turn to loosen bar.
Chain will tighten automatically.