Tracker Off-Road 800SX Service Manual page 88

DRIVE CLUTCH
Disassembling
NOTE: Note the timing marks (X) on the cover, spi-

der, and movable sheave. These must be aligned when
assembling the drive clutch for balance purposes.
1. Loosen the machine screws securing the cover.
Remove every other cap screw from the cover; then
while firmly holding the cover, remove the three
remaining screws equally.
MOD457
2. Remove the cover and spring.
MOD458
3. Remove the lock nuts (C) from the cam arm pivot
pins (B); then remove the pins and three cam arms
(A). Discard lock nuts. Inspect the cam arm pivot
pins and replace if damaged.
MOD462
Cleaning and Inspecting
NOTE: If any components other than flyweights,

pins, spring, thrust washers, or cover are damaged or
worn, clutch replacement is necessary.
86
1. Using parts-cleaning solvent, wash grease, dirt, and
foreign matter off all components; dry with com-
pressed air.
2. Remove any drive belt dust accumulation from the
stationary sheave, movable sheave, and bushings
using parts-cleaning solvent only.
CAUTION
Do not use steel wool or a wire brush to clean compo-
nents containing a bushing; damage to the bushing will
result.
3. Inspect the cover for cracks or imperfections in the
casting.
4. Inspect the cam arm pins for wear or bends.
5. Inspect the bushing in the cover for wear, damage, or
cracks.
6. Inspect the spring for cracking or twisting.
7. Inspect the cam arms for grooves.
Assembling
! WARNING
Never reuse the lock nuts on the cam arm pins.
1. Place the cam arms, and cam arm pivot pins (pivot
pin heads with the direction of rotation) into the
movable drive sheave and secure with new lock nuts.
Tighten to 50 in.-lb (5.7 N-m).
NOTE: The drive clutch rotates counterclockwise.

MOD463
NOTE: Grasp the movable sheave and lift it

upward; then release it. It must move freely and not
bind at any point.
2. Install the drive spring.