Manual

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12450 Whittier Blvd, Whittier, CA 90602 Tel: (562) 907-2600 FAX: (562) 907-2606

www.riveraprimoinc.com

BRUTE FORCE

Belt Drive

INSTALLATION INSTRUCTIONS

PRIMO BRUTE FORCE

BELT DRIVE

(pictured with OPTIONAL LED taillight/license plate assembly)

2108-0010

** SAFETY

NOTE

: CARBON FIBER GUARDS MUST BE

INSTALLED PRIOR TO STARTING

Use of the word Harley-Davidson, various motorcycle model names & designations & OEM part numbers are for end-user reference or

application information only. No affiliation between Rivera Primo Inc. & The Harley-Davidson Motor Company exists or is implied by the

use of said information. Rivera Engineering, Pro-Clutch, Primo, and Primo Belt Drives are registered trademarks of Rivera Primo Inc.

Unauthorized use is prohibited by law. la

3-1/2” WIDE / 14mm BELT

FITS 1990-2006 EVO & TWIN CAM SOFTAIL

HOME OF PRIMO

BELT DRIVES

QUALITY & PERFORMANCE SINCE 1973

Summary of content (8 pages)

PAGE 1
HOME OF PRIMO® BELT DRIVES QUALITY & PERFORMANCE SINCE 1973 BRUTE FORCE TM TM Belt Drive I N S TA L L AT I O N I N S T R U C T I O N S 3-1/2” WIDE / 14mm BELT FITS 1990-2006 EVO & TWIN CAM SOFTAIL® PRIMO BRUTE FORCE TM BELT DRIVE (pictured with OPTIONAL LED taillight/license plate assembly) ** SAFETY NOTE: CARBON FIBER GUARDS MUST BE INSTALLED PRIOR TO STARTING Use of the word Harley-Davidson, various motorcycle model names & designations & OEM part numbers are for end-user reference or application i
PAGE 2
IMPORTANT ! ** Prior to starting this installation, disconnect and remove the battery. Secure the motorcycle so it will not fall and so you have complete unobstructed access to the primary drive side of the motorcycle. ** Use blue threadlock on all bolt threads except starter jackshaft, & clutch hub studs. ** Use anti-seize on the clutch hub studs, and rear pulley bearing support shaft hubcap. ** Remove all ORIGINAL PRIMARY DRIVE components including inner & outer primary covers.
PAGE 3
STEP 5 : Install the front pulley bearing retainer SPACER and the front pulley insert by dropping the spacer into the front pulley, while holding the pulley insert against the back of the front pulley. Align the holes and attach using the using the five 5/16”-18 X 1 1/4” bolts. Use RED threadlock here. TORQUE THESE BOLTS TO 29 FOOT POUNDS. STEP 6 : Install the belt, the front pulley and the rear pulley together, sliding the pulleys onto the motor sprocket shaft and transmission main shaft simultaneously.
PAGE 4
STEP 8 : Install the clutch pack into the rear pulley/clutch basket. The .120” steel plate goes in first, followed by a friction plate, then a steel plate, alternating until all clutch plates are installed. ANTI-SEIZE STEP 9 : Install the pressure plate, diaphragm clutch spring and spring retainer using the four shouldered nuts (generously apply anti-seize on the clutch hub stud threads). Make sure you install the lock clips under nuts. Tighten the nuts equally until the nuts bottom.
PAGE 5
STEP 11 : Using blue threadlock, install the four aluminum stand-offs onto the motor plate assembly. The stand-off with the machined radius on the bottom goes in the front motor plate section just to the rear of the front pulley. If your kit came with 5/16” STAND-OFF STUDS, TORQUE THEM TO 29 FOOT POUNDS. If your kit came with 3/8” STAND-OFF STUDS, TORQUE THEM TO 47 FOOT POUNDS MOUNTED STAND-OFFS 2120-0072 2120-0073 two 4.733” long two 4.
PAGE 6
STEP 14 : Install the “INNER” OUTBOARD BEARING SUPPORT PLATE with the "bearing support shaft" into the front pulley and install the bottom-front bearing STAND-OFF (part # 2160-0062, 4.032” long with 2 flats & four tapped holes) between the motor plate and the front bearing support. This STAND-OFF has threaded holes to secure the front of the upper and lower carbon fiber belt guards. Do not tighten this STAND-OFF at this time.
PAGE 7
STEP 17 : Carefully install the lower carbon fiber belt guard using the 10/32 x 3/8” bolts & washers provided. Use a drop of blue threadlock and snug the bolts. The shiny surface of the carbon fiber belt guard is easily scratched. Avoid rough handling of this surface. Rotate the lower-rear and lower front STAND-OFFs to line up with the holes on the lower Carbon Fiber belt guard. Start the bolts using blue threadlock.
PAGE 8
CLUTCH ASSEMBLY - BRUTE FORCE TM / 3-1/2” WIDE / 14 mm BELT IMPORTANT INFORMATION DO NOT OPERATE this or any other Rivera Primo Inc. open primary belt drive without the proper safety guard or belt cover in place. Install the supplied guard or suitable other guards and/or belt covers available from Rivera Primo Inc. prior to starting the motorcycle. ADEQUATE GROUND CLEARANCE is extremely important, especially when turning to the left.