some folks say that a rebuilt outboard aint worth squat. i have yet to see any evidence to that effect. go with what skoolz said. pull the head off. if ur not sure what ur lookin at give me a shout. if it does need a complete rebuild, round here ur lookin at about $45 a hole, if you do the work yourself. with 75# on that cylinder, my guess is ur probably in good shape. might be able to put a ring set on it and go. whatever route you take, get an alarm on that oil tank!