HP Horizontal Tecumseh engine,recoil starter,cast iron cylinder sleeve,3/4 DIA. x 2.29" keyed crankshaft drilled and tapped for a 3/8"-24 bolt,2:1 aux pto shaft 5/8 dia. x 1" with key slot, has muffler guard, easy to convert for snow blower, ideal for tillers.This engine would be great to use on a go kart, because of the 3/4" dia. crankshaft. If you do not need the PTO shaft it can easily be cut off !! Comes with a 2 year factory warranty.