Join Date: Feb 2008
Location: Oxnard, CA
Bikes: '08 Fuji Roubaix RC; '07 Schwinn Le Tour GS; '92 Diamond Back Ascent EX
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You need to identify if the crank arm is loose or the bottom bracket is loose. When the crank arm moves that little bit, does the crank arm on the other side move with it? If so, it is a BB issue. If not, then you need to tighten the crank arm screw/bolt behind the cap. Get it very tight. Riding with the crank fixing bolt/nut loose can ruin your crank arm.
Last edited by CACycling; 03-10-09 at 04:05 PM.