15C 20C MFS - Tohatsu

66 TROUBLESHOOTINGEngine falling to startEngine starting but stopping soonPoor idlingPoor accelerationEngine speed abnormally highEngine speed abnormally lowOverheating of enginePower tilt inoperativePossible causeCOMPRESSION& OIL SYSTEM● ● ● ● ● Low compression●Carbon deposits in the combustion chamber● ● Incorrect valve clearanceLow oil pressure/level● ● ● ● Incorrect adjustment of throttle link●Insufficient cooling water flow, clogged or defective pump● ● Faulty thermostat● ● ● Cavitation or ventilationOTHERS● ● ● ● Incorrect propeller selection● ● ● ● ● Damaged or bent propeller11● ● ● Improper thrust rod position● ● ● ● Unbalanced load on boat● ● ● ● Transom too high or too low●A great deal of air is contained inside pump