Rivera Primo Pro-Clutch PC-1300XL User Manual
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11) Carefully remove the snap ring, spring seat, diaphragm spring, and spring-compressor-
tool as an assembly, and set aside.
12) Remove all the OEM clutch plates.
13) Remove the retaining ring from the inboard end of the clutch hub. Using an arbor
press, and with proper bearing (inner race) support, press the OEM clutch hub from the
clutch basket. Failure to properly support the inner-bearing-race when pressing the
clutch hub out, may result in damage to the bearing.
14) Disassemble your Rivera Engineering PC-XL Pro-Clutch kit in preparation for installa-
tion noting the sequence of clutch plates. They will be reinstalled in exactly the same
order. Using the arbor press with proper support for the inner bearing race, press-in the
Rivera Engineering PRO CLUTCH PC-XL-1300 clutch hub until it bottoms. Check the bearing
for smooth operation. Stiff, or difficult-to-rotate bearings must be replaced.
15) Immerse the Pro-Clutch fiber plates in primary fluid for 5-10 minutes. Install the Pro
Clutch pack into the clutch basket (.120” steel plate first, fiber, steel, fiber etc.). Install
the pressure plate.
16) Position the diaphragm spring, and spring compressor assembly onto the clutch
pack/basket, and re-install the spring-seat, and snap ring to hold the diaphragm spring in
place. With a wrench holding the forcing screw, turn the tool handle counter-clockwise
until the spring compressor can be removed. Remove adjuster plate retaining ring, and
clutch adjuster assembly.
17) Install the front motor sprocket, primary-chain, and clutch basket together on the
motor shaft & transmission main-shaft. Using the Sprocket locking tool, tighten the front
motor sprocket to 150-165 foot pounds of torque. Install the clutch hub nut (left hand
threads) and tighten to 70-80 foot pounds of torque.
18) Install the adjuster plate, and adjuster screw mechanism into the pressure plate.
19) Install a new shifter shaft seal in the primary cover. Reinstall outer primary cover,
adjust primary chain tension, and fill primary with the required amount of primary fluid.
Adjust the clutch, install the hex-shaped lock-plate, & spring and you're ready to ride.