Earlier this year I bought both my boys used '02 XR100's. Assuming the valves had never been serviced, I decided to check both. The Haynes manual I have stated a clearance on both valves at .05mm.
When I check the gap, both valves on both bikes were very tight. I adjusted them to .05mm per the manual. The bikes fired up probably easier than before. What has me second guessing myself is you can hear the rocker arms / valves clicking at idle speed. Never noticed that sound prior to making the adjustment.
Went back in on one of the bikes to double check my work. Both intake and exhaust clearance was right at .05mm. Fired it back up and heard that valve noise. Is this normal for the XR / CRF100's? Can anyone confirm .05mm as the right gap?
Thanks,
Will