While using the snow plower the traction drive would not work when the traction lever was engaged. I removed the pully guard/cover and seen that one of the belts was off of the pully. (the one on the rear pully) I then removed the auger assembly and discovered a third belt(broken) lying in the bottom of the pully enclosure. I need a diagram or picture/print of this machine so I can figure out if this third belt even belongs to the unit, and if it dose wher dose it belong. appreciate any help. Bob