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harleyrob2000

cam sprocket wear 08 yz450f

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08 yz450f

I need to replace my cam chain. My cam sprockets have wear marks from the chain. How do I know when to replace the cams? What am I looking for as far as wear goes?

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It's exceedingly unlikely that the cams will need to be replaced due to wear at the sprocket. The presence of the slight wear marks you probably see now is normal. The crank sprocket wears far faster, and the crank will need repair when the drive side of the teeth becomes a significantly different shape than the back side.

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