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Pete, Electronic Engineer
Category: Small Engine
Satisfied Customers: 17274
Experience:  Over 16 years of experience installing and repairing electronics.
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I have Yamaha 50hp 2 stroke boat motor. ghest rpm is 2500,

Customer Question

I have Yamaha 50hp 2 stroke boat motor. Highest rpm is 2500, what's happening
Submitted: 12 months ago.
Category: Small Engine
Customer: replied 12 months ago.
Yamaha 50HP boat motor, 2006, on a 21 ft Sedona Pontoon Boat. The highest RPM is 2500. Why not higher RPM?
Expert:  Pete replied 12 months ago.

Hi there,

This may be caused by a dirty filter or carburetor, or possibly bad spark plugs.

Do you have an in-line fuel filter fitted?

Have you checked the spark plugs?