Generator shuts down shortly after start, E02 displayed on Pramac controller

Safety first: Switch the generator to OFF, disconnect battery negative, and allow the engine to cool completely. Never open a hot radiator cap.

• Check coolant level (liquid-cooled units): Once cool, remove the radiator or expansion tank cap and verify coolant is at the recommended level. Top up with the correct coolant mix specified by Pramac. Inspect hoses and clamps for leaks.
• Inspect airflow: Remove any debris, leaves, or dust blocking the radiator fins or air intake grilles. Use low-pressure compressed air from the inside out to clean the radiator.
• Verify fan operation: On a test start, observe whether the electric cooling fan (if equipped) runs when temperature rises. If the fan does not run, check the fan fuse, relay, and wiring harness.
• Check temperature sensor connection: Locate the coolant temperature sensor on the engine or thermostat housing. Inspect the connector for corrosion or damage and reseat it firmly.
• If overheating persists: Do not continue to run the generator. A stuck thermostat, failed water pump, or internal blockage may be present. Contact a Pramac-authorized technician for further diagnosis.