well I have a 89 force 15 hp runs great misses a little and kinda lunges every now and then, but it sat for 9 years so what do you expect. My buddy has a 9.9hp Mercury 2000+ model and and recently it took a turn for the worse, so we slapped my force on his boat. Well, it seems like his 9.9 would push his boat faster than my 15hp. The prop on my 15 hp is really small and the one on his 9.9 is much larger. Me and my dad used this motor when I was a kid and I remember him having to get a new prop for it because we managed to trash the original prop and im not sure if he got a prop the same size or he got one that would work for our purposes, but I was wondering what the original prop was suppose to be the size and pitch etc. I can't seem to find it anywhere online. thanks in advance for any answers
