1987 Yamaha 50hp lack of power

2000vikings

Seaman Apprentice
Joined
Apr 8, 2007
Messages
30
I have a 1987 Yamaha Pro50LH motor that I am having issues with. Specifically, it starts and idles great, and runs at slow speed fine. As soon as I try to accelerate, the motor seems to cut out and only runs at 1/4 speed. I had the compression checked, and the three cylinders check out fine. Any thoughts or ideas on what is going on? Thanks.
 
Top