I need to replace the engine and it appears that someone has done that before. I think the engine originally was a Tecumseh 16 hp - There is a 3 belt pulley (looks like it might be with a centrifical clutch) on a 1" shaft but looks like someone put it on a sleeve. Anyway I am having a heck of a time trying to remove the pulley. I have used a pretty substantial amount of torque with a special gear puller with no luck. There is a key in the shaft and a front bearing (probably part of the centrifical clutch????) - I could email pics if I could figure out how to attach here in this forum. Anybody know if this pulley has a trick to get it off the old engine shaft?