Assembly; Attaching The Bumper Spike; Attaching The Bar & Chain - McCulloch MAC 838 Instruction Manual

Protective gloves (not provided) should be
worn during assembly.

ATTACHING THE BUMPER SPIKE

The bumper spike may be used as a pivot
when making a cut.
1. Loosen and remove the bar nuts and the
clutch cover from the saw.
2. Attach the bumper spike with the two
screws as illustrated.
ATTACHING THE BAR & CHAIN
(If not already attached)
WARNING
: Recheck each assem-
bly step if the saw is received assembled. Al-
ways wear gloves when handling the chain.
The chain is sharp and can cut you even
when it is not moving!
1. Loosen and remove the bar nuts and the
clutch cover from the saw.
2. Remove the plastic shipping spacer (if
present).
Clutch cover
Bar nuts
Chain adjustment tool
(Bar Tool)
3. An adjusting pin and screw is used to ad-
just the tension of the chain. It is very im-
portant when assembling the bar, that the
pin located on the adjusting screw aligns
into a hole in the bar. Turning the screw will
move the adjustment pin up and down the
screw. Locate this adjustment before you
begin mounting the bar onto the saw. See
following illustration.
Adjustment located on clutch cover

ASSEMBLY

4. Turn the adjusting screw by hand coun-
terclockwise until the adjusting pin just
touches the stop. This should allow the
pin to be near the correct position.
5. Slide guide bar on bar bolts until guide bar
stops against clutch drum sprocket.
Bar bolts
6. Carefully remove the chain from the pack-
age. Hold chain with the drive links as
shown.
CUTTERS MUST FACE IN
DIIRECTION OF ROTATION
Location of
shipping
spacer
7. Place chain over and behind clutch re-
tainer, fitting the drive links in the clutch
drum sprocket.
8. Fit bottom of drive links between the
teeth in the sprocket in the nose of the
guide bar.
9. Fit chain drive links into bar groove.
10. Pull guide bar forward until chain is snug
Inside
in guide bar groove. Ensure all drive links
view of
are in the bar groove.
clutch
11. Now, install clutch cover making sure the
cover
adjusting pin is positioned in the lower
hole in the guide bar. Remember this pin
moves the bar forward and backward as
the screw is turned.
7
Guide bar
Tip of
Bar
Depth Gauge
Cutters
Drive Links