Drive System
Drive Chain and Sprockets
REMOVING
1. Remove the self-tapping screws securing the front
clutch shield and rear sprocket cover; then remove
from the engine compartment. Note the position of
the hood cable.
NOTE: It will be necessary to reinstall the hood
cable once the guard is removed.
2. Remove the muffler hold-down spring from the muf-
fler and support bracket; then remove the two nuts
securing the muffler to the engine.
IO111A
3. Press down on the muffler and pull it to the side until
the muffler flange clears the engine exhaust studs;
then remove the muffler from the engine compart-
ment. Account for the exhaust gasket.
4. Compress and hold the brake lever; then remove the
cap screw and washer securing the chain sprocket to
the driveshaft. Release the lever.
IO118A
5. Remove the retaining ring (A) securing the brake
band. Account for a washer; then loosen the rear
brake cable adjustment jam nut (B) and slide the
cable out of the brake bracket. Set the band assembly
aside.
IO112A
6. Secure the centrifugal clutch with a pair of channel-
lock pliers at the outer clutch collar; then remove the
cap screw securing the clutch. Account for a lock
washer and a flat washer.
A020
IO113
7. Slide the chain sprocket and clutch (with the drive
chain) off the respective shafts and remove from the
engine compartment. Account for the rear driveshaft
key.
CLEANING AND INSPECTING
1. Thoroughly wash all metallic components in parts-
cleaning solvent. Dry using compressed air.
2. Wash all non-metallic components with soap and
water.
3. Inspect the sprocket driveshaft for damage or for
stripped threads.
4. Inspect the keyways in the driveshaft, chain sprocket,
and clutch for wear or damage.
5. Inspect the chain and chain sprocket for wear or dam-
age.
