Rivera Primo Pro-Clutch PC-1300XL User Manual
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1) Disconnect both battery cables (negative cable first) for safety.
2) Remove the chain-case drain plug (lower rear of outer primary cover). Drain the pri-
mary fluid. Remove the gear shift lever and left foot-rest assembly. Loosen chain
adjuster screw lock-nut, and turn chain-adjuster screw counter clock wise to release
pressure on the primary chain.
3) Remove the clutch inspection cover or derby cover (94 or later models) and O-ring
seal. Slide spring and hex-shaped lock-plate from primary cover. Turn clutch adjustment
screw clockwise until the nut can be removed.
4) Remove outer primary cover screws and outer primary-cover with gasket. Remove & dis-
card shifter lever shaft seal. Leave the clutch cable and release mechanism connected
to the primary cover.
5) Install sprocket locking tool ( PN HD-38362) and remove motor sprocket nut. Loosen
the motor sprocket, and leave it in place.
6) Remove adjuster-plate retaining-ring and remove the adjuster-plate and adjusting-
screw-assembly from the pressure plate.
7) Remove left-hand-thread clutch hub nut & washer from the transmission main-shaft.
8) Remove the clutch assembly, primary chain and motor sprocket together.
9) With the clutch assembly removed, reinstall the adjusting screw assembly into the
pressure plate. Secure the adjusting-screw-assembly in place
with the retaining ring.
10) Thread the clutch-spring forcing-screw (PN HD-38515-91) onto
the clutch adjusting screw. Place the flat ring of the spring
compression tool (PN HD 38515A) against the diaphragm clutch
spring. Thread the tool handle onto the end of the forcing
screw. Hold the forcing screw with a wrench, and turn the
tool-handle clockwise until pressure is released from the snap
ring & spring-seat that holds the diaphragm spring in place. Do
not compress the spring any more than is needed to remove the
snap ring and spring-seat, or damage to the pressure plate may occur..