T
hank you for buying a Primo Belt Drive! The new Brute Classic or Brute II Classic
belt drive system is intended for use with pre-Evo Big-Twin motorcycles (1936-to-
1984) using a 4-speed transmission. These 1 ½” belt systems will install inside all
pre-Evolution OEM aluminum or tin primary cover assemblies maintaining the stock
external appearance. The Brute II Classic utilizes a belt idler for tensioning, the Brute
Classic does not. Included in the kit is Rivera Engineering’s diaphragm spring operat-
ed ”Pro Clutch” suitable for stock, street performance or competition applications. All
Alto clutch plates as utilized in Primo Belt Drives, and Rivera Pro-Clutch kits come with
a Lifetime (limited) Warranty.
installation instructions for the
Primo Brute Classic &
Primo Brute II Classic
BELT DRIVE KITS
ATTENTION INSTALLER...
Prior to starting the following installation procedure make sure the motorcycle is secured properly, and that the
battery is disconnected to prevent accidental start-up. Also please read and familiarize yourself with the instruc-
tions. Use only the correct tools for a safe, long-lasting installation.
88
mmmm ((nnoo iiddlleerr))
1111
mmmm ((wwiitthh iiddlleerr))
Brute Classic
8mm Belt
Brute II Classic
11mm Belt
™
BruteClassic 8 27 04.qxd
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