Zeeman
Well-Known Member
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Was out on the lake today and when I tried to accelerate to 5000 rpm my engine surged to 6500. I immediately backed it down to 4000 rpm and it did it on its own again and I had to throttle back to 3000 rpm. It was moving the boat ok but I have noticed I have been losing some speed this season. I have a 90 hp Yamaha. Any ideas what could be causing this? Spun hub? The trim was all the way down too