Where Seagulls Dare
New member
I have had to replace one of my Duo props on my Volvo Penta 5.7GI out drives (2 years old). The pitting was apparent only 3 months after the boat was delivered new. There are small holes in the main body of the propeller blade, so I don't think it's caused by cavitation. Also when the blades were disassembled there were quite large holes inside the main shaft. My feeling is that this is caused by material failure - any thoughts?