Manual

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2108-0005

INSTALLATION INSTRUCTIONS FOR

It’s common knowledge that a belt drive primary can provide advantages and service that a chain

cannot, especially considering the new technology present in every belt. For dependable, high per-

formance, long-life service nothing beats a modern Primo

Belt Drives primary-drive belt-kit!

Primo’s long-time tradition of “Quality & Performance” has made our belt drives the most popu-

lar in the world. That same quality & performance is now available in the Brute IV

3” wide open

electric-start primary belt-drive for most Big-Twin motorcycles. The Brute IV

is ideal for street-

performance, competition, and show-bike applications. It looks as good as it works. Carefully read

and follow these instructions for a quick, convenient installation. If you have any questions regard-

ing this installation call (562) 907-2600 and a PRIMO

BELT DRIVES technician will be happy to

assist you!

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. law.

IMPORTANT SAFETY NOTE....

When performing any motorcycle work such as installing a belt drive it should be securely fastened in an upright position with

easy access to the primary drive. If you are working with a lift, fasten the motorcycle securely to prevent it from falling.

Always remove the battery to prevent accidental start-up.

Brute IV

Belt Drives

3” Wide

8mm Belt

Fits 1970-2006

Big Twins

(Except Late 1978-86

w/Rotary Top 4-Speed Trans)

BRUTE IV

SHOWN WITH STANDARD POLISHED

ALUMINUM BELT GUARD (PP-419-P-AY),

SUPPLIED IN KIT (NON RUBBER-MOUNT MODELS)

BRUTE IV

KIT SHOWN WITH

OPTIONAL FLAMED BELT GUARD

# 2014-0010

** To prevent serious injury, all

open belt drives must be run

with a full coverage Belt Guard !

www.riveraprimo.com

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 INSTALLATION INSTRUCTIONS FOR Brute IV Belt Drives TM BRUTE IV TM SHOWN WITH STANDARD POLISHED ALUMINUM BELT GUARD (PP-419-P-AY), SUPPLIED IN KIT (NON RUBBER-MOUNT MODELS) 3” Wide 8mm Belt Fits 1970-2006 Big Twins (Except Late 1978-86 w/Rotary Top 4-Speed Trans) ** To prevent serious injury, all open belt drives must be run with a full coverage Belt Guard ! BRUTE IV TMKIT SHOWN WITH OPTIONAL FLAMED BELT GUARD # 2014-0010 It’s common knowledg
PAGE 2
STEP 1: Begin by disconnecting battery cables. Removing all the OEM primary-drive components including the inner primary cover, AND THE FACTORY INNER-BEARING RACE ON THE TRANSMISSION MAIN SHAFT! Check the motor shaft & transmission main shaft for leaky seals. Check & thoroughly clean the motor drive shaft & trans main shaft.
PAGE 3
STEPS 3A & 3B: Primo Belt Drives PP-502 Motor Plate assembly (rear section) for Dyna Glide is notched for swing-arm pivot-boss clearance (photo 3A). Approximately .125” of material must be removed from the end of the nut & swing arm pivot bolt assembly (photo 3B) to allow clearance for the Brute IV starter ring-gear before installing the clutch basket. Remove enough material from the end of the nut & bolt to allow the starter ring gear & clutch basket assembly to be installed & rotated with approximately .
PAGE 4
8 STEP 8: If you’re installing the Brute IV on a Dyna Glide, check for clearance between the rear of the starter ring gear and the swing arm pivot nut/bolt assembly. If needed remove additional material from the swingarm pivot nut/bolt assembly. STEP 9: Install the front pulley & nut (hand tighten to snug). Check alignment of the pulleys by placing a straight edge flush with the inside lip of the clutch basket as shown. If needed, spacers can be used behind the front pulley to correct minor mis-alignment.
PAGE 5
STEPS 12 & 13: With both pulleys and the belt installed the clutch plates can now be installed. Install the clutch plates in exactly the same order as they were shipped. The steel .120” thick plate first, then a fiber plate, then steel, alternating until all the plates are installed. Last plate in is steel. When in doubt, call Rivera Primo Inc., and consult a technician.
PAGE 6
STEP 16: TIGHTEN THE SHOULDERED NUTS EQUALLY UNTIL THEY BOTTOM, AND THEN TIGHTEN TO 30 INCH POUNDS (NOT FOOT POUNDS) OF TORQUE. Install the clutch adjustment screw & adjust the clutch following factory procedures as found the Harley-Davidson service manual. Bend the lock tabs over to prevent the nuts from coming loose. 16 Note: Never use Loctite on these threads 17 STEP 17: Install the starter support housing (over the starter extender mechanism) as pictured.
PAGE 7
REPLACEMENT PARTS LIST BELT GUIDES / WASHER FRONT PULLEYS (w/o INSERT) PP-113 . . . . . . . . . INSIDE GUIDE FOR OFFSET PULLEYS PP-115-45-1.25 . . . OUTSIDE GUIDE FOR FRONT 45T PULLEY PP-117-S-1.25 . . . . FRONT PULLEY WASHER P-48-3 . . . . 48 TOOTH / 1986-UP / FITS SOFTAIL/DYNA-GLIDE P-49-3 . . . . 49 TOOTH / 1986-2000 / FITS FLH & FXR MODELS OFFSET FRONT PULLEY INSERTS /(PULLEY/HARDWARE NOT INCLUDED) OFFSET INSERTS PP-IS-1A . . . . STANDARD INSERT (NO OFFSET) PP-IS-8A . . . . 1/4” (.
PAGE 8
CLUTCH ASSEMBLY - BRUTE IV TM / 3” WIDE / 8 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. A stamped billet aluminum safety guard has been supplied with this belt drive kit. Install the supplied guard or suitable other guards and/or belt covers available from Rivera Primo Inc. prior to starting the motorcycle.