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Everything Dirt Bike
Make / Model Specific
Yamaha
YZF 250 F valve clearance
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<blockquote data-quote="croberts24" data-source="post: 232969" data-attributes="member: 7029"><p>agreed. That's why I take down the valve stem tip 0.010"-0.015" so bucket does not contact the retainer and I can go back to thicker shims. Obviously there's a limit that the valve stem tip cannot be any lower than the retainer counterbore. Still, it adds many years of life to hammered in seats.</p></blockquote><p></p>
[QUOTE="croberts24, post: 232969, member: 7029"] agreed. That's why I take down the valve stem tip 0.010"-0.015" so bucket does not contact the retainer and I can go back to thicker shims. Obviously there's a limit that the valve stem tip cannot be any lower than the retainer counterbore. Still, it adds many years of life to hammered in seats. [/QUOTE]
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Everything Dirt Bike
Make / Model Specific
Yamaha
YZF 250 F valve clearance
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