Yfz 450??????????????????

Yamaha

i have a question for all the yfz 450 experts. i have an 05 yfz that had head troubles. bought an 06 head with cams and cam hold downs. i put everything together and cant get the intake cam to push the vavles down far enough for the cam to rotate. are there any differences between these two years??????

No the only difference is the combustion chamber. Make sure you have adjusted the valve lash correctly. Is it your center intake valve??

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