User guide

RIV ERA PRI M O I nc.
12450 Whittier Blvd, WHITTIER, CA 90602
[phone] FAX [phone] E-mail: [e-mail]
www.riveraprimoinc.com
IMPORTANT INFORMATION
LIMITED WARRANTY:
All pulleys are warranted to be free from defects in material and workmanship under normal use for a period of one year from
actual date of purchase. Seller’s liability shall be limited to repair or replacement of any materials found to be defective, free
of charge at it’s plant or authorized service depots, of specific manufactures components. It is further warranted that products
that were designed for a specific purpose, shall perform for that purpose when installed exactly as defined in the Installation
Instructions accompanying the unit. In no event shall Rivera Primo Inc. or seller be liable for consequential or special dam-
ages asserted to be attributed to malfunction of our product, for any reason including, but not limited to, damage asserted to
be from improper installation of our purchased Primary Belt Drive components.
This warranty shall not apply to any products which have been subjected to abuse, neglect or accident, nor shall it apply to
any product which has been repaired or modified by any person not specifically authorized in writing by the manufacturer.
THERE IS NO WARRANTY ON BELTS.
Due to the differing conditions and circumstances under which all belts are installed
and used, Gates Rubber Company will not warranty any belt for length of service. Regardless of belt type, keeping your
system free of debris and other objects is most important. Remember too, improper handling of the belt can shorten service
life. Do not crimp the belt. Do not twist the belt. Do not pry the belt onto the application. If you’re shipping or storing, try to
eliminate forward and back-bending of the belt.
LIMITATION OF LIABILITY:
THERE ARE NO IMPLIED WARRANTIES WHICH EXTEND BEYOND THE DESCRIPTION ON THE FACE OF ANY SHIP-
MENT AND THERE IS NO IMPLIED WARRANTY OF MERCHANTABILITY AND FITNESS EXCEPT THAT THE MATERIAL
SOLD HEREUNDER SHALL BE OF SELLER’S STANDARD QUALITY, and buyer assumes all risk and liability for all loss,
damage or injury to person or property resulting from the use of said material in manufacturing processes or in combination
with other substances, or otherwise. Except as otherwise provided herein quality shall be in accordance with seller’s specifi-
cations. Final determination of the suitability of the material for the use contemplated by buyer is the sole responsibility of
buyer, and seller shall have no responsibility in connection with such suitability.
WEAR COMPENSATION ADJUSTMENTS
If when installed the diaphragm spring is not compressed
to within .010”-to.020” of being flat (as measured at the
outer edge of the spring) optimum clutch function will not
be available. To increase compression a special .028”
washer can be installed on each shoulder nut as shown.
When adjusted correctly a typical diaphragm spring will
provide more than twice the spring pressure of it’s coil
spring counterpart. Rivera offers three different
diaphragm springs. Stock, medium, and heavy for any
street or competition applications
If when installed diaphragm spring is completely flat, or
the center of the spring is pushed past the point of being
flat, (excessive compression) correct spring function will
not be available. To reduce diaphragm spring compres-
sion, a special .022” flat washer can be installed on each
of the clutch hub studs as shown at right. Always check
the compression or curvature of the spring with a quality
straight edge.
correct
Pro-Clutch clutch-pack requires no immediate adjustment, the clutch pack height having been set at the factory.
After significant mileage, some adjustment may be necessary due to normal wear. Use procedures outlined
below when adjustment is required. For best all around performance the spring should be compressed to within
.010” of being flat! This will provide best clutch lever action at the handlebar, & normal spring pressure to the
clutch pack. Slightly more clutch pressure can be gained with the diaphragm spring with .030” of spring height
(outward bow), but this will increase slightly the hand effort needed to operate the clutch. This spring configura-
tion can be obtained by placing a small diameter washer on each of the clutch hub studs, as shown in photo B!
Three clutch spring strengths are available: A stock equivalent spring (black), a medium spring for street perfor-
mance applications (silver ), & a competition spring (gold) for drag race only applications.
incorrect
BRUTE III CLUTCH PACK HEIGHT = 1.715”-1.745”
4