pretty much a new saw , you would need a new crank , crankcase gasket , you might as well put in a new set of seals and crankshaft bearings will your in there , just pull the rewind off saw and the bar and chain and most likely the drive so you can get a hold of the clutch grab a hold of flywheel and see if you can get it to spin one way or the other without turning the clutch , most pins break on flywheel side in motor on the crank but make sure you try both ways incase the pin didnot break flush and straight , I'm hoping you just need a carb kit or something like that