Does it smell like the belt is slipping? What is the part number on the belt you are using? The part number in the manual is wrong for the 200 series machines. If you have a 200 series tractor then use belt C23538. Let us know a bit more info on what you havekoditten said:Running the snow castor last night I noticed that the volume of snow coming out the shute would deminish. Engine RPM's did not seem to change much. Am I looking at clutch rebuild or just a glazed belt? I was only throwing about 2-3 inches of light snow.