Westinghouse Start-Run Dropout / Fuel or Sensor Shutdown

Generator starts but immediately stalls within a few seconds.

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Faulty oil pressure switch falsely indicating low pressure, blocked fuel jet, misadjusted idle speed, defective run relay on control board.

How to Fix / Troubleshooting

Safety first: Set the controller to OFF, open the main AC breaker, and disconnect the negative battery cable.

  • Bypass test (technician only): A technician may temporarily bypass the oil pressure switch to confirm if it is falsely shutting down the engine. If the engine stays running with the switch bypassed, replace the oil pressure switch immediately and restore proper wiring.
  • Clean carburetor (if equipped): Remove the carburetor bowl and clean jets with carb cleaner. Replace the bowl gasket if damaged.
  • Inspect idle stop screw: Ensure the throttle stop screw is set per the service manual so the engine does not close completely at idle.

Because safety shutdowns are involved, improper bypassing can damage the engine. Use a qualified technician for this diagnosis.

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Repair Difficulty

Hard 4/5

Required Part

Oil Pressure Switch
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