Troy Bilt, Tuffy, Rear - Tine Tiller, 4.0 Tecumseh Engine "wheel horse 160 manual" Questions

160;We can't move it into the garage unless it's running. The tires are locked and it has to be dragged. Some Troy Bilt Tillers were designed with a manual "free-wheel". If yours is a Tuffy (and maybe

...Horse Troy Bilt tiller.  The wheels turn but not the tines.  The trouble shooting section indicates that I should adjust the PTO/Clutch but does not give directions to do so. Any advice? ...