Lester, First of all, this motor must be from the 70's or 80's, because my books on Sea Kings don't have any number like that. When you said, "these are the numbers on the tag, ON THE ENGINE". What that tells me is, you didn't give me the OUTBOARD numbers, they are on the transom clamp unit that attaches to the boat. The ENGINE number simply mean "engine only". To me it sounds like you have a 5hp, or a 7hp, air cooled Eska made Sea King. Eventhough this motor is air cooled, don't let it fool you. It has a small water pump, and it is used to cool the entire hollow housing below the engine block because of the exhaust heat. If you run that baby out of the water you are taking a chance on melting that aluminum wall that houses your drive shaft. Regardless of what any book, or so-called experts tell you about gas mix to use on that engine. Here is the best, and safest way to fly. 10 ounces of 30W NON DETERGENT oil, and one ounce of lead substitute to every gallon of regular unleaded gas. Don't use that Mercury two cycle stuff, it has modern addatives in it. You can get the stuff I mentioned at any auto supply store. Remember, when this motor was made, there was ONLY leaded gas on the market. And detergent based oil is not good for this motor. I know hundreds of people of whom burned up OLD outboards, chainsaws, generators, lawnmowers, and snowmobiles, because they didn't listen to a guy with experience in 2 cycle engines. By the way, that engine on that outboard is a Tecumseh lawnmower engine with a steel sleeve casted into the cylinder wall to make it last longer. Bring the high speed needle out 3/4 of a turn after you seat it down, then you might have to make slight adjustments from there becauuse no two carbs are the same as far as running smooth settings. Don't turn it down tight, or you'll ruin the brass seat. Good luck, LLoyd
