Michael R Ballston Spa , NY April 02, 2018 The drive belt was slipping when it was cold. The drive belt was slipping when it was cold. Eventually the belt warmed up from the slippage and once warmed had enough friction to hold. The Craftsman manual said that special tools were required to change the belt, but that was not so. It was fairly easy. 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes