McCulloch MAC 316 XT Chainsaw User Manual


 
7
ATTACHING THE BAR & CHAIN
(If not already attached)
WARNING: Recheck each assem-
blystepifthesawisreceivedassembled.Al-
ways wear gloves when handling the chain.
The chain is sharp and can cut you even
when it is not moving!
1. Loosenandremovethechainbrakenuts
and the chain brake from the saw.
2. Remove the plastic shipping spacer (if
present).
Chain
Brake
Chain Brake
Nuts
Clutch Drum
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
intoaholeinthebar . Tu rningthescrew will
move the adjustment pin up and down the
screw. Locate this adjustment before you
begin mounting the bar onto the saw. See
illustration below .
Adjustment located on Chain Brake
Inside view of
Chain Brake
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 behind clutch drum until
guide bar stops against clutch drum
spro cke t .
Mount the Bar
6. Carefully remove the chain from the pack-
age. Hold chain with the drive links as
sho wn .
CUTTERS MUST F ACE IN
DIIRECTION OF ROTATION
Tip of
Bar
Cutters
Depth Gauge
Drive Links
Placechainontothes
p
rocket
7. Place chain over and behind clutch, 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. Pullguidebar forwarduntilchain is snug
in guide bar groove. Ensure all drive
links are in the bar groove.
11. Now,install chainbrakemakingsurethe
adjusting pin is positioned in the lower
holeintheguidebar . Rememberthis pin
moves the bar forwardand backward as
the screw is turned.
12. Installchainbrakenutsandfingertighten
only. Once the chain is tensioned, you
will need to tighten chain brake n uts.
CHAIN TENSION (Including units
with chain already installed)
NOTE
: When adjusting chain tension, make
sure the chain brake nuts are finger tight only .
Attemptingto tensionthe chainwhen the chain
brake nuts are tight can cause damage.
Checking the tension:
Use the screwdriver end of the chain adjust-
ment tool (bar tool) to move the chain around
the bar. If the chain does not rotate, it is too
tight. If too loose, the chain will sag below the
bar .
Chain Brake Nuts
Chain Adjustment
Tool (Bar Tool)
Adjusting the tension:
Chain tension is very important. Chain
stretches during use. This is especially true
during the first few times you use your saw .
Always check chain tension each time you
use andrefuel your saw. Youcan adjust the
chain tension by loosening the chain brake
nuts andturningthe adjusting screw 1/4 ofa
turn while lifting up on the bar.
S Ifchainistootight,turnadjustingscrew1/4
turn counterclockwise.
S If chain is too loose, turn adjusting screw
1/4 turn clockwise.