I noted while doing the shims on my YZ426, that if I set the cam marks to align to the head, the I bar on the flywheel is some degrees away:
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The mark you can see on the flywheel in the top left of the flywheel cover hole, is the bottom of the I beam.. It's a few degrees out. If I rotate it to line up exactly, the cams don't rotate by even a whole tooth. The bike does run, but doesnt idle too well (valves need shimming too) just wonderd if this could have an impact
Edited by cjard, February 11, 2012 - 02:26 AM.