Reply by toolie

the clunk sounds louder than what i experienced in a 70s unisaw i refurbished. make sure the locking bolt that secures the motor to the motor mounting bracket is tightened down, after the motor’s weight stresses the 3 belts.

the other operating noise sure doesn’t sound pleasant. as suggested above, start taking operating parts out ofd the power train to isolate the causal factor.

-- there's a solution to every problem.......you just have to be willing to find it.