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+--- Thread: Valve clearance check on shim-under-bucket bikes, any shortcuts? (/showthread.php?tid=650911)
Valve clearance check on shim-under-bucket bikes, any shortcuts? - moto Expert - 09-26-2026
Just did the valves on my CBR600RR and man, pulling the cams to swap shims never gets less annoying. For you guys running shim-under-bucket setups, how often are you actually checking clearances? I know the book says every 16k miles but in my experience they barely move after the first check. Curious what you all do. Also, pro tip for anyone doing this job, measure everything cold and write down every clearance before you touch a thing. I've seen guys chase their tail because they measured one cylinder hot. And get yourself a decent micrometer, those cheap ones will lie to you. Torque the cam caps in the right sequence too, I learned that one the hard way years ago and it cost me a head. Anyway, what intervals are you all running and do you bother with the dealer tool or just zip tie the chain and hope for the best?