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The brush bar was running freely, my wife advises me that the motor runs noisily, i cant tell as I am partially mutton. The belt was running freely, until it snapped. I have run the motor with no strain on the shaft and there is no heat in the shaft what so ever. I then put the shaft under strain, by running an improvised belt from the shaft and around a screwdriver, the belt lasted about 20 seconds,with very little tension on it, snapped after burning through. I felt the shaft, and got a blister, and lost layers of skin. Does this lead you to think it might be the clutch? if so what do you recommend? my thoughts are not to attempt to dismantle further, until I have my book, as I am a dab hand at getting things apart, it is the putting back together, that leaves a bit to be desired, also I have the diagnostic skills of a pleb, apologies to all plebs. Thanks for your help, I will keep posting to let you know how it is resolved.
I have a none clutched model which keeps breaking the belts but seems to be burning through them but the motor is good as it has been replaced recently with no problems just seems to be melting them and I can't figure out why any ideas?