I hope that this might help someone else.
PeeWee messaged me the other day that we needed a new belt for the HF cut off saw. It was slipping badly. This is a toothed type belt and runs on a sprocket pulley. It would be odd to have it wear out so soon. I asked him if he checked the belt tension. The motor is adjustable and tensions the belt. The screws are notorious for loosening. Sure enough, the vibration of the saw caused the screws to loosen. A quick adjustment and retightening of the motor fixed the problem. Back in biz.
If you ever have to replace the belt after long use, Gates makes a replacement belt better than the HF original. I saw it on amazon for $4.29 with free two day shipping if you are a prime customer.