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The Shop
Will I continue to ask a lot of questions?
With it running , pull in the clutch lever and see if the sound changes. If so, it's the clutch basket bearing.
Paw Paw
Again....Does the noise change when you pull in the clutch lever while the engine is running? If it does not , then I would be looking at the auto decompression arm and or the cam chain and cam chain guides, valve clearances, valve guide wear, piston slap or possible play in the upper rod bearing.
The noise seems to be louder on the clutch side in the video. That too is the side of the decompression arm, but not the side for the cam chain or chain guides.
Paw Paw
Post a reply to: CRF 450 Engine noise VIDEO