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Compression Release wont work


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I just put in a used head with valves. The compression release on the exhaust valve is working but i dont think its releasing any compressio . Could the valve need adjusting? Or what could be the prob ive reached a dead end. Could the valve be to far down for the compression release to be depressig it like it should? And how can i fix this

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Check your valve clearances and make sure they are in spec. The Hot Cams website has good how-to videos on installing cams and checking clearances - watch the ones on the YZ250F.

You should be able to operate the decompression lever on the end of the exhaust cam easily with your finger, and there should be light spring tension pulling back on it. It may be pinched by the mounting bolt, or the mounting bolt may have backed out.

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