Question about 1989 Yamaha XJ 600

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Resr end of bike seems to twitch at times could it be swingarm

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Things to check. Is the chain adjusted correctly and is the rear axle tight. With the rear wheel off the ground can the wheel be rocked around on the axle (Are there bad wheel bearings?). If you still have the problem after these checks, raise the rear wheel off the ground,take off the wheel, unbolt the shock (check mounting bolts for looseness), grab the rear swing arm to see if it moves or wiggles at the pivot points. You probably have bad swing arm bearings. If the swing arm bearings are bad you will probably have to change both bearings and the long inner bushing to fix the problem.

Posted on Mar 19, 2011


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