I have a 1999 Force 75 HP on a 20 ft pontoon boat...my prop says on it...13x19...at WOT it barely reaches 4300 RPM but seems sluggish alot...What size prop do I need to put on it to get the motor to perform better?
I have a 1969 Johnson 33 HP model # 33EL69A and I need a lower unit case or whole unit and wondering what lower units will interchange with mine or do I have to find the one just for this motor? I have found a lower unit case but its from a 1965 Evinrude 33 hp Skitwin outboard model # 33553B...