Re: spun hub prop removal
Remove the nut and pull the prop off. Mid range horsepower motors and higher did not come with a "standard" prop. A prop was installed that matched the size and weight of the boat the engine was installed on. There is no such thing as a standard prop. The only way you know if you have a correct match is to run the boat wide open with an average load. If the engine operates at or very near the manufacturers recommended wide open throttle rpm, then the prop is correct and should be replaced with the exact same type. If the engine revs higher than recommended, a prop with more pitch is required. If the engine is lugging and can't reach the recommended rpm band, a prop with less pitch is required. The diameter and pitch of the prop is normally stamped on the barrel between the blades or in the hub end of the prop behind the nut. You might also find the manufacturers part number. If you don't have a tach, there is no way you can tell whether you have the right prop.
