Assembly, Warning – McCulloch MAC 842 User Manual
Page 7

7
ASSEMBLY
Protective gloves (not provided) should be
worn during assembly.
ATTACHING THE BUMPER SPIKE
(If not already attached)
The bumper spike may be used as a pivot
when making a cut.
1. Loosen and remove bar knob completely
by lifting lever and turning counterclock-
wise. Remove clutch cover.
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. Move ON/STOP switch to the STOP
position.
2. Loosen and remove bar knob completely
by lifting lever and turning counterclock-
wise.
LOOSEN
3. Remove clutch cover and plastic ship-
ping spacer (if present).
Clutch Cover
Bar
Knob
Location of
shipping
spacer
4. Slide guide bar on bar bolts until guide
bar stops against clutch drum sprocket.
Bar bolts
Guide bar
5. Carefully remove the chain from the pack-
age. Hold chain with the drive links as
shown.
CUTTERS MUST FACE IN
DIIRECTION OF ROTATION
Tip of
Bar
Cutters
Depth Gauge
Drive Links
6. Place chain over and behind clutch re-
tainer, fitting the drive links in the clutch
drum sprocket.
7. Fit bottom of drive links between the
teeth in the sprocket in the nose of the
guide bar.
8. Fit chain drive links into bar groove.
9. Pull guide bar forward until chain is snug
in guide bar groove. Ensure all drive links
are in the bar groove.
10. Install clutch cover. Be sure adjusting pin
is in the adjusting pin hole in the guide
bar.
CAUTION:
It is very important when instal-
ling the clutch cover that the adjusting pin
aligns into the adjusting pin hole in the bar. Fail-
ure to install the clutch cover correctly may re-
sult in permanent damage to your chain saw.
Back
view of
clutch
cover
Adjusting pin
11. Install bar knob and finger tighten only.
Once the chain is tensioned, you will
need to tighten bar knob.