Rivera Primo SU Sportster KIT 1041-0064 - Manual (Page 7)

Secure the upper & lower carb supports with a flanged
lock nut (1100-0034).
Now tighten the two rear intake flange 12 pt bolts with a
12 pt curved wrench for easier access.
(RPI Part # 1201-0001).
Fully installed upper & lower carb supports.
Use one flat washer (1100-0143) as a spacer between the
lower carb support and the upper carb support. (Use two
if needed).
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