Generator cranks normally but never fires, no attempt to start

Safety first: Turn controller to OFF, open main AC breaker, and disconnect negative battery cable before removing any covers.

• Verify fuel supply: Confirm gas valves are open and LP tank is not empty. For liquid fuel models, ensure there is adequate fuel in the tank.
• Check spark: Remove a spark plug, reconnect its wire, and ground the plug body to the engine block. Briefly crank (technician-level) and look for a strong blue spark. No spark indicates an ignition system issue.
• Inspect plug wires: Ensure all spark plug wires are firmly attached and not damaged.
• Fuel delivery: For carbureted units, check that fuel reaches the carburetor (fuel line should be wet after cranking). For gaseous units, a technician should verify gas pressure at the inlet.