knocking sound

Hi,

few weeks ago I had trouble removing primary clutch, end up hammering it a bit and was afraid of putting it back. I purchased a used one and installed it today. When I started the sled I noticed a knocking sound, open the cab to ear better and seemed to come form the clutch surrounding.....

found that, see video;
it only does it from one spot.....

Any clue, or part that should be replaced?

Sounds like the sheave bushings are toast

I agree

Thank Vincent and Murder Yamaha, really appreciated.