Yamaha EF2400iS Generator Starts but Stalls

Yamaha EF2400iS Generator Starts but Stalls

Yamaha EF2400iS generator/inverter starts but stalls refers to when a machine for converting mechanical energy into electricity activates and begins to work, but then stops running, usually because of an overload on the engine.

Common symptoms of a Yamaha EF2400iS generator that starts but then stalls include:

    • EF2400iS runs then shuts off.
    • EF2400iS stalls under load.
    • EF2400iS cuts off after running a while.
    • EF2400iS surges and then stalls.
    • EF2400iS keeps shutting off.
    • EF2400iS runs for a few minutes then stops.
  • EF2400iS starts then dies immediately.

Fortunately, there is a step-by-step process that one should follow to determine what is causing the generator to stall. Use this guide to fix the engine’s stalling problem.

Engine Starts but Stalls

Yamaha EF2400iS Engine Starts and Stalls

Troubleshooting Procedures

Fortunately, there is a step-by-step process that one should follow to determine what is causing the generator to stall. Use this guide to fix the engine’s stalling problem.

    1. Inspect fuel level. Add fuel if needed.
    1. Check for stale or deteriorated gasoline.
    1. Is fuel cock clogged? Clean obstructions if needed.
    1. Is the fuel line bent or kinked.
    1. Is the fuel hose clogged? Clean any blockage.
    1. Are the carburetor retaining nuts loose or missing? Tighten bolts as needed.
    1. Check for air suction due to a faulty carburetor joint or gasket. Replace damaged carb joint or gasket if needed.
    1. Measure valve clearance. Adjust valves if out of specification.
    1. Check compression using a compression gauge. If compression is low, check for a bad cylinder, worn piston or piston ring. Replace if needed.
  1. Check the condition of the throttle control system. Refer to the factory service manual “Throttle Control System” for checking procedures.

It is recommended to use the factory service manual when performing maintenance and repairs to the Yamaha EF2400iS.

Improper repair can render the machine unsafe or result in extensive damage. A manual will also provide basic mechanical precepts and procedures critical to portable generator repair technology.

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Portable Generators

1 Comment

  1. I have the Yamaha ef2000is inverter. Cost over $1K. You would think it wouldn’t have this problem for me to figure or how to fix. Less than 5 hours on it. Now I’m boondocking in the desert and can rely on it.
    Maybe I should’ve bought a Honda. They seem more popular out here.

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