On Friday, December 12, 2014 1:56:38 AM UTC-5, wrote:
Hi
I have Yamaha outboard 2 stroke motor (250 hp, model 1996). My issue with this motor that when I accelerate the speed control at a certain speed the RPM varies up and down it self. can somebody help me to solve this issue.

Carb float? Is there a Throttle Position Sensor it that thing?