Attention – Rivera Primo Brute III User Manual

Page 2

NOTE: Replace the OEM hex-head bolt (Dyna Glide only) with the

button-head Allen bolt provided in the kit. TORQUE THE BUTTON-

HEAD BOLT TO 29 FOOT POUNDS.

Early FXR models may need to have some material removed from

the inner primary in the area indicated by the X’s. Check

pulley/belt clearance here before tightening clutch hub nut.

This inner primary (Early

Evo) has had a tab

removed to allow belt

clearance in the area indi-

cated. Most installations

require some grinding on

the outer primary webbing.

Install front pulley. Install the

rear pulley without the belt &

check alignment as shown

(straight edge flush with rear of

ring-gear lines-up with outer

edge of front pulley). Remove

pulleys and proceed with instal-

lation. If alignment isn’t satisfac-

tory see photo 8. The provided

.100” washer can be used to

space the front pulley outward

as needed, however it may be

nesecary to use less or more

shim.

After ensuring proper pul-

ley

alignment,

again

check the areas indicated

in the photo for belt and/or

pulley clearance. Always

check rear-pulley and belt

clearance here before

operating the motorcycle.

Check pulley alignment with a straight-edge

Check primary belt clearance here

Check for proper belt clearance

Install buttonhead Allen bolt

Apply a thin coat of grease to

the splines of the transmission

main-shaft to act as both a cor-

rosion inhibitor, & lubricant.

The grease also acts as a cush-

ion for the splines on the trans-

mission main-shaft during

operation.

Apply grease to the main-shaft splines

Install the rear pulley (clutch bas-

ket) & belt. Apply 2 drops of blue

thread-lock to the main-shaft

threads as shown. INSTALL THE

CLUTCH HUB NUT (WITH SEAL),

& TIGHTEN TO 70-80 FOOT

POUNDS OF TORQUE. The cen-

ter adjustment screw/sealed nut

combination prevents transmis-

sion oil from leaking thru the

main-shaft into the clutch pack.

Install rear pulley & belt.

A .100” washer may be

needed behind the front

pulley on some Dyna-Glide

& Softail applications.

Install washer as needed.

Install front pulley, washer & inner/outer

guides. Use 1-2 drops of blue thread-

lock on the threads of the motor shaft.

INSTALL & TIGHTEN NUT TO FACTORY

SPECS (150-165 FOOT POUNDS) using

a quality torque wrench or air impact

driver.

Shims are manufactured from high quality steel, precision

ground for parallel & flat surfaces to ensure perfect pulley

alignment. Correct pulley alignment & correct belt tracking

are a must for long belt life. These shims make pulley align-

ment easy. Shims are available in .020", .030", .050", .075" &

.100” thick dimensions, or sets of "one-of-each.”

Optional pulley shims kit

Part # 2100-0066

Includes one each of

.020”, .030”, .040”,

.050” and .100”

Friction plate 2nd, then alternate

steel, friction, steel, friction. The

clutch plates should be installed in

the same order as delivered.

The clutch pack height is pre-

set prior to shipment, &

should not be altered without

consulting a Primo technician.

Friction Plate plate second...

Install the pressure plate as shown.

Apply a generous dab of high

quality anti-seize to each of the

Pro-Clutch studs (as shown).

Install the pressure plate

Install the diaphragm spring, spring retainer (beveled side inward against

the spring) locking tabs, and shouldered nuts as shown. TIGHTEN THE

NUTS EQUALLY UNTILTHEY BOTTOM, & THEN TIGHTEN TO 30 INCH POUNDS

OF TORQUE. Bend a tab over each nut to keep it tight! Spring adjustment

(and clutch pack height) is established prior to shipping.

Clutch adjustment: Run the clutch cable all the way out until the clutch

lever touches the handlebar grip. Then run the center adjusting screw in

until it touches the pushrod, back it out 1/4 turn and tighten the jam nut.

Adjust the clutch cable for 1/8” free play. Note: Braided clutch cables

require little or no free play.

Install the locking tabs & retainer, & adjust the clutch.

Belt should have 3/4”-to-1” of up & down play when the drive train is cold. Re-install the outer primary

cover and check belt clearance. Install a louvered or vented derby or inspection cover, and you’re ready

to ride. Check belt tension after the drive train reaches normal operating temperature. The belt should

feel snug but not excessively tight!

ATTENTION!

Always check the clearance between the OUTER PRIMARY

COVER, & the belt drive assembly PRIOR TO OPERATING THE

MOTORCYCLE with a new belt drive, particularly with 95 and

later motorcycles.

After installing the .120”

steel drive plate, Install

the rest of the clutch pack

per steps 10 and 11.

UPDATED CLUTCH HUB INFORMATION

Install the .120” thick steel plate at the

rear of the clutch pack as shown. The

clutch pack can then be installed.

.120” thick Steel Plate plate first.

Primo’s new clutch hub uses a .120” thick

steel plate at the back of the clutch pack

replacing the permanently attached alu-

minum backing plate of the earlier model

clutch hub. See drawing.

BELT SHOULD HAVE

1/2” - TO - 1” UP & DOWN

PLAY WHEN THE DRIVE

TRAIN IS COLD!