Re: High RPM with no power…

[DAN ANDERSON]

Impossible to say. When you take the prop off to mark it, if it is an OMC prop then the size should be on the hub. It is under the spline washer right around the circumference of the hole with the splines. On a V-4 should be like 13 3/4 X 15, 17, or 19? The last number is the pitch. Could be any pitch according to size and weight of boat. You need the proper prop so your boat with typical load turns the correct RPMs at WIde Open Throttle.
Do not shift your outboard like your car. One quick pop into gear is better with motor running. The water is your slipping medium. You don’t have a slipping clutch like a car.

Dan in TN