It has a techumesh motor on it and the belt popped off and the pully rubbed on to the main drive pully towards the top of the motor and there are metal shavings but i replaced the belt and it seems that the belt is rubbing on the ider pully bolt that is into the motor and when fired up the snowblower moves without squeezeing the handle down.? and suggestions?

Garden - Troy-Bilt - Pony Garden Tiller