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Crf100 top end knock


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My crf100 top end has a knock and its low on power. I looked at and adjusted the valves and cam chain but it still knocks. If i move the flywheel with my hand back and forth i can hear the knock. I can not figure it out. Someone please help!

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It's probably easier just to get a new crank.  Shop around on the internet and use different years.  I just checked, I think they discontinued the earlier cranks which used to cost about $145. I did find some cheap ones one ebay.  Just get 1992 and up.

Edited by socalxr
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