This is when the propeller intermittently pulls out of the water when underway hurting your boating or fishing experience.

Pontoon boat motor cavitation. First it can physically damage the propeller. Is 16 the transom mount on the motor to the prop center-line is 23. Pontoon Motor Cavitation I have just purchased a new 18 ft pontoon with a new Honda 50 hp outboard.

They give you better bow response when trimming your motor. Any owner seeking the last bit of speed from an outboard-powered boat should grab a yard stick. I am by no means and expert and I am sure more people will chime in here but it is my limited experience and knowledge that the main cavitation plate on the outboard motor has to be level with the bottom most portion of the transom it is mounted on.

Also are add-on cavitation plates useful on pontoon motors to reduce prop ventilation issues. A damaged prop can also cause cavitation which you will feel in the form of vibration. And will try to post them up.

Propeller cavitation Cavitation if the formation of air bubbles on the propeller. More importantly the optimal outboard length prevents cavitation. The propmotor setup seems to be good.

Air from the water surface or exhaust gases from exhaust outlet being drawn into the prop blades causes ventilation. Cavitation plates are mounted to the lower units of boats to help increase performance. My only complaint is the cavitation issue I experienced a couple times.

I took some pics this AM. Cavitation is bad for three reasons. Even slightly chipped or bent blade edges can cause surrounding water to BOIL cavitate.