Cam chain replacement

[Pete K]

I'm rebuilding my M10 for my track motor and just wondering what needs to be replaced in the cam chain department?
Chain? Sprocket? Tensioner? Guide? Piston?

Cheers

[Mike W.]

Well, chain obviously, guide for sure, they get old and brittle and like to crack and break, tensioner probably, sprockets if you feel like really doing a good job and spending money and taking the time to get the crank sprocket pressed off. I usually do chain and guide, maybe the tensioner if it doesn't look good. Worn sprockets won't cause a failure, but might affect timing a tiny bit.