I also would be worried about owning a boat with a Force engine. I have had one before and they are nothing but headaches. Parts are usually quite hard to find and some mechanics don't even want to mess with it.
Do what nek121328 said, get is looked at by a marine mechanic.. also ask about availability of parts if something were to happen to the engine.
Do what nek121328 said, get is looked at by a marine mechanic.. also ask about availability of parts if something were to happen to the engine.