Boat-ryder
Petty Officer 3rd Class
- Joined
- May 19, 2012
- Messages
- 87
So I recently picked up a used lower unit to replace my old one. It was suppose to be identical and seems to be as I mounted it but the prop isn't going on right. My engine is a 1990 force 120hp and the lower came off a 1991 force 90hp. The prop splines up but it seems to grab where the prop and foot come together. Did they change prop sizes between these years or between the HP's? Or maybe I'm doing something wrong? Thanks for any help