Motor has 11 hours of running time. Came back from a cruise, the motor ran great, put it on the trailor, hooked up the ears for flushing the engine, turned on the water with good pressure, started the motor, water was pumping out of the pee hole, 1 minute later the buzzer starts, and motor shuts off, checked water to the ears, fired it up again, water coming out of the pee hole was cool, buzzer started again and motor shut off, no obstructions, water coming out of pee hole, ANY IDEAS?