Re: 1990 90hp force outboard max rpm
If I remember correctly this engine is rated 90 hp at 5500 rpm with a WOT range of 4500-5500 rpm.
If you are propped for 5500 max at WOT, you should be ok. I have mine on a 14 foot flat bottom boat and I run a 23 pitch prop. gives me 5500-5600 at about 56 MPH. Next I,'m going to jack the engine to see if I can gain another 3-4 MPH.