The bikes been off the road awaiting the shock rebuild, and so I’ve been replacing various bits and thought I’d recheck the valve clearances. I found when doing it when I lined up the flywheel the cam markers looked just ever so slightly misaligned and vice versa when the cam lines are flat against the top of the head the timing marker is just slightly off.
when the cam line markers are in line all clearances are within tolerances , and the bike runs well with No issues starting and no funny noises when running. the cams haven’t been out during my ownership of the bike and whilst I did have the cam chain tensioner out the other day to replace the gasket, I can’t see that causing it to jump a tooth on the cam sprocket as there was no engine movement when I took it out and replaced it. The chain is tensioned well. here’s the timing marks
If it starts and runs and sounds fine, don't worry! Looks ok to me anyway, although the flywheel mark is not lined up in the pic. (Is that how it is when the cam shaft lines are flat?) Cam chain might be slightly stretched, but it's by no means excessive.
Ride and enjoy!
I had the same issue bugging me when I replaced the cam chain.
The alignment & timing marks were in the same position with the chain I took out. I moved one cam one tooth & it is way more than the mis-alignment. You couldn't mistake it one tooth out!
Mossproof is on the money. Again.
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In the Riverina.
'73 RD250, '80 XS1100, '81 RD373LC, '96 Tiger 900/sidecar, '02 TTR250, and another XS11 - this time a chain drive Period 5 race bike that may be ready to race eventually.
