Controller shows F30 Service Due; generator continues to run but indicates maintenance is required.

Safety first: Perform maintenance with the generator off, isolated from load, and cooled down.

• Perform scheduled service: Follow the Siemens maintenance schedule for your model. Typical tasks include engine oil and filter change, air filter replacement, fuel filter replacement, spark plug inspection (gas), and general inspection.
• Inspect belts and hoses: Check for wear, cracks, or leaks and replace as needed.
• Reset service timer: After completing maintenance, use the controller menu to reset the service interval counter according to the manual.
• Record maintenance: Log the date, hours, and work performed for warranty and future reference.