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post #4 of Old 07-15-2013
Sundayflyer32
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Re: A4 Clutch slipping

Did it operate correctly in the past or has it always done this? After I bought my Islander 28 a couple of years ago I discovered something similar with the boat. However I was not familiar with the drive train and after a summer of this I determined it was actually the prop cavitating. It was the original 2 bladed 12 x 7 and was pitted from years of immersion.

This spring I swapped the prop for a 3 blade Indigo bronze unit and no more cavitating.

When motoring around the harbor at low throttle and any time I tried to accelerate quickly, it spun up like the prop was not there. At the dock, I could see a lot of bubbles being formed around the prop when running it in gear and tied down. Just my experience as it wasn't the transmission.
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