Loud knocking, metallic clatter, or deep banging noise from the engine while running.
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.
Possible Causes
How to Fix / Troubleshooting
Safety first: Immediately shut down the generator if loud knocking is heard to prevent catastrophic failure.
- Check oil level: Verify oil is at the correct level. If very low, top up but be aware internal damage may already have occurred.
- Inspect flywheel nut: With the engine off and battery disconnected, remove the flywheel cover and ensure the flywheel nut is tight.
Persistent knocking indicates serious internal engine damage. Do not continue to run the unit; contact a professional for engine teardown or replacement.
Repair Difficulty
Required Part
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