Published troubleshooting topics

Outboard problems and symptoms

Start with what the engine is doing, then confirm that each possible cause and guide applies to your exact model.

• Engine cranks but will not start

  The starter turns the engine, but the engine does not begin running. Several fuel-supply or starting-setup conditions are possible; this is not a single diagnosis.

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• Unstable idle or stalling

  The engine starts but does not maintain a stable unloaded idle, or it stops. Fuel-path conditions are possible and unresolved cases require professional diagnosis.

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• Engine lacks power

  The engine runs but produces less power than expected. Fuel supply, external load, trim and propeller condition are among the possible areas to inspect.

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• Starter motor does not operate

  The starter motor does not turn when a start is attempted. Battery, connection, fuse, control-position or starter-motor conditions are possible; this is not a single diagnosis.

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• Excessive vibration

  The outboard vibrates more than expected during operation. Propeller, shaft, fouling, mounting or steering-swivel conditions are possible; this is not a single diagnosis.

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