Visible fuel leak from generator base or fuel lines; fuel odor around Siemens standby generator.

Safety first: Immediately shut down the generator, close all fuel supply valves, and eliminate all ignition sources. Ventilate the area. Fuel leaks are a fire and explosion hazard.

• Locate leak source: Visually trace wet fuel from the lowest point upward to find the origin (fitting, hose, filter, or tank seam).
• Tighten fittings: Carefully tighten any loose flare or compression fittings. Do not overtighten plastic fittings.
• Replace damaged hoses: If a flexible hose is cracked or weeping, replace it with a fuel-rated hose of the same specification.
• Check filter installation: Ensure the fuel filter is properly seated and its gasket is not pinched. Replace the filter and gasket if necessary.
• Tank leaks: If the tank itself is leaking, take the generator out of service and arrange for tank repair or replacement by a qualified service provider.