TOHATSU MFS 5D LPG Owner's Manual page 66

66
TROUBLESHOOTING
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Incorrect valve clearance
Poor sealing of cylinder head
Poor sealing of intake or exhaust valve seat
Wear of piston, piston ring and cylinder
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Carbon deposits in the combustion chamber
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Poor tightening of spark plug
Insufficient cooling water flow, clogged or defective
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pump
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Faulty thermostat
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Damage of anti-ventilation plate
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Incorrect propeller selection
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Damaged or bent propeller
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Improper thrust rod position
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Unbalanced load on boat
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Transom too high or too low
Transom too high or too low
Possible cause