model # 4w79d I just got this today, it has been hanging in a garage since 1988. It ran great when the guy I got it from hung it up. it has never been down till now. what do I have to do or check before I try and fire this thing up? the original gas is still in the tank. I believe this motor has one piston, but it has two sparkplugs. I have never worked on an outboard before. <br /> thanks, bassontap
