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250f

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having horrible time adjusting the valves in an 02 yz250f i had 140mm shimms in it i put 145mm in it and bolted down the intake cam and the cam is tight should it turn smoothly or should i run start the engine

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Check your work, something is wrong. Do not bump start the bike. With the chain tensioner removed, you should be able to turn BOTH cams with your fingers slightly without too much effort. Reinstall the cam chain tensioner and you should be able to rotate the engine using the crank case bolt counter clockwise without too much effort (i.e. the bolt you used to find TDC) - if you can't turn that bolt easily, then one or both of your cams are too tight and something is not lined up/installed correctly, recheck your work.

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