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NOTE: To remove left-side components, see Engine
- Removing Engine.
DRIVE CLUTCH
Disassembling
NOTE: Note the timing marks (X) on the cover, spider,
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.
WC659
WT519
2. Remove the cover and spring.
WC657
3. Remove the lock nuts (D) from the cam arm pivot pins
(B); then remove the pins and account for six thrust
washers (C) and three cam arms (A).
WT518A
Cleaning and Inspecting
NOTE: If any components other than flyweights, pins,
spring, thrust washers, or cover are damaged or worn,
clutch replacement is necessary.
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.
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
1. Place the cam arms, thrust washers, and cam arm
pivot pins (pivot pin heads with the direction of rota-
tion) into the moveable drive sheave and secure with
new lock nuts. Tighten to 48 in.-lb.
NOTE: The drive clutch rotates counterclockwise.
CAUTION
Do not use steel wool or a wire brush to clean compo-
nents having a bushing; damage to the bushing will
result.
! WARNING
Never reuse the lock nuts on the cam arm pins.