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I have a 1986 Outrage 25 that I have just repowered with a new 2022 Yamaha F300. Motor was broken-in today and did some testing. Hoping someone can help me with the correct height. I am running Yamaha Saltwater Series II 17p x 15 1/2 in diameter prop. I am turning 47 mph at 5700 rpms with two adults and 70 gallons of fuel, so I think the prop may be correct. However, I am getting a fair amount of spray from around the foot and the cavitation plate cannot be seen while running. The motor is mounted all the down, flush on the top of the transom. This is a 25” shaft motor. Boat handles like a dream. I am assuming the motor should be raised due to the presence of the spray to get optimal performance. If so, what hole should I move it to? Currently, it is in the top hole, so I have the option to raise the motor up 1, 2, or 3 holes.
Thanks,
Bulldog 98