I recently purchased an older Bearcat chipper/shredder. Model 650, wheeled model with 5hp B&S engine. Cast Iron housing. Feed leaves through hopper at bottom, branches on side. This thing doesn't have a scratch on it and starts on first pull (flywheel engine). I don't think it ever was used much. Does anyone know where I can get manual or information on it. Bearcat website does not list this model.