Rivera Primo Primo Brute II Classic - Manual (Page 4)

Install the diaphragm spring & spring retainer & locking tabs
making sure that the beveled side of the spring retainer is
inward. Dab some anti-sieze on the shouldered nuts. Tighten
the nuts until they bottom, DO NOT OVER TIGHTEN. Do not
install the shoulder-nuts without first putting some anti-seize on
the threads of the clutch hub studs. Bend a lock tab over each
nut to keep the the nuts from loosening.
Using a straight edge, check the diaphragm spring for flatness. When installed correct-
ly the spring will be compressed to within .010” - .020” of being flat.
Adjust the clutch leaving approximately 3/16” play at the clutch
lever.Three different clutch springs are available; a black spring (equal
to stock), a silver spring, (additional pressure on the clutch pack, still
easy on the hand), and the gold spring (maximum spring pressure,
heavy handed).
Reinstall the outer primary cover. Primo recommends
that the primary case be vented for cooler belt operation.
Either install a vented derby cover or drill two holes in
the front of the inner primary, and leave the drain plug
out to allow air to circulate.
12450 Whittier Blvd, Whittier, CA 90602 (562) 907-2600 FAX (562) 907 2606)
e-mail [email protected]
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