I have a 175 Evinrude 81 model. We went out today for a ride and after several miles at half throttle we trolled a little above idle for several minutes and the warning buzzer went off. I took it to be overheating buzzer. Throttled back up to a plane and the buzzer quit and no problems from there out. I checked the engine at the house and plently of water is coming out of the pee hole and the thermostats are opening up. the buzzer didnt go off in the drive way. Any Ideas?? Thanks
RJ