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radio592

03 YZ450 valve clearences check.

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Hey guys, I am going to check my buddies valves on his 450 because he does not have the correct tools :bonk: How ever, I do not have a YZ, Im a KX guy but have absolutely nothing against Yamaha. In fact, I would have gotten the YZ but got a great deal on the kx. Back to my question, what are the correct valve clearances for both intake and exhaust valves on an 03 450? Thanks in advance. :ride::thumbsup:

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:prof: what he said

My 2c:

If you trim the feeler gauges (if they're too wide), be sure not to check with the trimmed edge.

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Standard feelers are not too wide for the big YZF, only for the center intake of the 250F.

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