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TROUBLESHOOTING
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Low compression
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Carbon deposits in the combustion chamber
Incorrect valve clearance
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Low oil pressure/level
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Low oil level
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Use of improper oil
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Oil deterioration
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Clogged oil strainer
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Faulty oil pump
Incorrect adjustment of throttle link
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Insufficient cooling water flow, clogged or defective pump
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Faulty thermostat
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Cavitation or ventilation
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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
Possible cause
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