TOHATSU MFS 9.9E Owner's Manual page 82

82
TROUBLESHOOTING
11
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Possible cause
Valve timing is not correct (Belt is stretched or installed
incorrectly).
Valve clearance is defective.
Valve seat sealing is defective.
Piston, piston ring and/or cylinder is worn excessively.
Combustion chamber car deposition is too much.
Spark plug is loose.
*
(Cooling water is lacking.) Pump is defective or clogged.
*
Thermostat operation is defective.
Anti-cavitation plate is damaged.
Use of mismatched propeller.
Propeller is damaged or deformed.
Thrust rod position is not correct.
Boat is unbalanced by load position.
Transom installation height is too high or too low.
Throttle link adjustment is defective.