I HAVE A 1993 YAMAHA 200 2 STROKE OUTBOARD. WHILE RUNNING THE ENGINE THE WARNING BUZZER IS GOING OFF OVER 3500 RPM. UNDER 3500 RPM BUZZER DOES NOT GO OFF. CHANGED WATER PUMP RECENTLY AND HAVE PLENTY OF WATER PRESSURE. OIL INJECTION UNIT IS STILL HOOKED UP. ANY IDEAS WHAT MIGHT BE GOING ON.
