While you wait for answers, we may have found some information which could help you.
Click here for Spare Drive Belt
Why does my Craftsman Circular Saw turn backwards?
craftsman circular saw blade spins when load put on?
need capacitor ?
Need to replace power cord on circular saw?
Need switch...part #3-706796-01 (old Sear's part #)?
how to fix my model 31510961 craftsman saw switch?