Arctic Cat M 8000, Service Manual

Page: 159 / 210

158
Drive Train/Track/Brake
Systems
This section has been organized into sub-sections for ser-
vicing drive train, track, and brake systems; however,
some components may vary from model to model. The
technician should use discretion and sound judgment
when removing and installing components.

NOTE: Whenever a part is worn excessively,
cracked, or damaged in any way, replacement is nec-
essary.
SPECIAL TOOLS
A number of special tools must be available to the techni-
cian when servicing the drive train, track, and brake sys-
tems.
 NOTE: Special tools are available from the Arctic
Cat Service Parts Department.
Drive Belt
If the drive belt is longer than specified, the drive clutch
and driven clutch will not achieve full shift ratio. This
will result in poor acceleration and a decrease in top
speed.
If the drive belt is shorter than specified, the starting ratio
will be higher causing the belt to slip. A too-short drive
belt will cause a bog on engagement and will not allow
the engine to reach peak RPM.

NOTE: A thinly-worn drive belt may produce the
same effect as one that is too long.
 NOTE: A stiff belt causes a HP loss to the track. As
a belt warms up, it gets more flexible and transmits
power with less HP loss.
 NOTE: When installing a new drive belt, see After
Break-In Checkup - Drive Belt Break-In in the Gen-
eral Information section.
REMOVING (4000 LXR)
1. With the engine off, remove the left-side access
panel. Loosen the 1/4 turn on the lower console.
2. Remove the cap screw, washers and sheave adjuster
from the end of the driven clutch; then remove the
cap screw, lock washer, and washer from the
adjuster.

NOTE: Assure that the shims and O-ring are not
removed from the adjuster.
0743-395
3. Reverse the adjuster and install the cap screw with-
out washers into the adjuster. Install the sheave
adjuster and cap screw onto the driven clutch; then
tighten the cap screw until the movable sheave opens
far enough to allow the belt to be removed.
4. Remove the drive belt from the driven clutch first;
then from the drive clutch.

NOTE: Each time the driven clutch cap screw is
removed, the hole in the driven shaft should be
cleaned free of any Loctite residue.
INSTALLING (4000 LXR)
1. Place the drive belt (so the arrow is pointing toward
the front of the snowmobile) in the drive clutch; then
between the sheaves of the driven clutch.
2. Install the sheave adjuster in its original position
(beveled side out); then install the cap screw, lock
washer, and washer into the driven clutch. Tighten
the cap screw (threads coated with blue Loctite
#243) to 20 ft-lb.
3. Secure the left-side console and access panel,
Removing Drive Belt (ZR 4000
RR/6000/8000)
1. Set the brake lever lock; then remove the left-side
access panel. Loosen the 1/4 turn on the lower con-
sole.
Description p/n
Drive Clutch Bolt Tool 0644-281
Drive Belt Deflection Tool 0644-424
Bearing Removal and Installation Tool 0644-167
Movable Sheave Bearing Tool 0644-594
Clutch Alignment Bar (4000 LXR) 0644-428
Clutch Alignment Bar (6000/8000) 0744-093
Drive Clutch Puller 0744-062
Drive Clutch Spanner Wrench 0644-136
Driven Clutch Compressor Tool 0644-444
Rear Suspension Spring Tool 0144-311
Brake Caliper Bearing Puller 0744-067
CAUTION
Never attempt to substitute any other drive clutch puller
for the recommended puller or severe clutch damage
will occur.
CAUTION
Before securing the driven clutch, be sure the rollers
are up against the torque bracket or damage to the
back-side cams may occur.
! WARNING
Never operate the snowmobile without the belt
guard/access panel secured in place.