I have a Yamaha Pro 50 HP It will go right up to 4500 RPM and after about one minute the RPM drops down to 3100 RPM and will not go any higher until I stop the engine and restart after sitting for about 20 minutes. Then it does the same thing. I changed the fuel filter, plugs, thermostat with no results. It has plenty of oil and new gas. The Tach indicates no over heating or any other problem. Any sugestions?
Thanks
Gene
It is all fixed now. Mainly a carb (cleaned) problem and coil (replaced).
Thanks
Gene
It is all fixed now. Mainly a carb (cleaned) problem and coil (replaced).
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