Briggs & Stratton Run-Then-Stop Condition

Generator starts but immediately shuts down after a few seconds, no code or only generic shutdown.

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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

Low oil level triggering shutdown, Faulty oil pressure switch intermittently opening, Loose engine ground connection, Defective run relay in controller

How to Fix / Troubleshooting

Safety first: Turn controller to OFF and allow engine to cool before checking oil.

  • Check oil level: Verify oil is at the full mark on the dipstick. Top off with recommended oil if low.
  • Inspect oil pressure switch wiring: Wiggle the connector and harness at the oil pressure switch while observing for intermittent shutdowns during a test run. Repair any loose or corroded connections.
  • Engine ground: Locate the main engine-to-frame ground strap. Clean both contact points and tighten securely.
  • Controller relays: If the engine loses power as if the ignition is cut, the internal run relay may be failing. Replacement of the controller may be required by a technician.
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Repair Difficulty

Medium 3/5

Required Part

Oil Pressure Switch
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