Re: I have a chance to buy a late 80's 15 hp force outboard. How much?
I would say somewhere in $200-400 range, depending on what needs to be done to it.
I have the same outboard, but it's a 7.5HP, detuned version. I paid $350 for mine 3 years ago, it was in pristine condition.
- You want to make sure the ignition system has good spark on both plug wires as the BIM coils can go bad. I had one go bad and had to spend $150 for an ignition system upgrade.
- The fuel pump diaphragm is bad, or will be bad shortly if it hasn't been replaced all ready. Ethanol is hard on old rubber parts. It's an easy $10 fix.
- Baja, check for saltwater corrosion. My outboard came from San Diego and had a touch of corrosion on some of the bolts, but nothing serious or stuck bolts.
- Check compression on both cylinders, you are looking for an even number more than high compression. My 7.5 only tests out at 75# on each cylinder, but it still runs great.
- The impeller most likely needs to be replaced, every 2 years maintenance item.
- Check for water in the lower unit.
Be aware that Gamefisher/Force outboards haven't been made in about 15 years, so parts can be hard to come by and finding a shop to work on it could be tough. I do all my own maintenance and there is nothing I haven't been able to find yet, though it took me a bunch of searching to find a set of reeds for it.