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#50225
Steen Carstensen
Participant

First off, top RPM for those engines when racing is in the low 14000, they fall off pretty quickly after that.

Unscrew the top of the carb, pull the spring out of the slide, then unhook the throttle cable, you see a brass fitting, unscrew that and the needle will come out, do watch out for the small washer on top or underneath the clip, that’s for 1/2 needle clip adjustments.