I have a 1988 Suzuki 15 HP outboard, has been running great, but today when I would accelerate; the motor would rev up and the boat would slow down. I assuming a spun prop is the problem. I did hit a few things in the water on Wednesday when i was out, but it really wasn't anything major. I took the carter pin out and took off the nut, then there was another piece behind the nut with splines on it (not sure what it is called) but when i pulled it off there were pieces of loose rubber in there. Now i don't know how to get the prop off; do i need to tap it off or do i need a puller. I also drained the lower unit oil and there were no metal shaving in the oil; it looked great and it was free of debris, so i assumed spun prop is the problem what would be my next move.