The carburetor of a small gasoline generator is simpler than that of a motorcycle, so it is not prone to breakdowns. Usually, breakdowns are caused by long-term use, gasoline in the carburetor measuring hole is clogged or the automatic. The lever is rusty and stuck, usually it can return to normal after cleaning.
If the generator is not used for a long time, it is best to drain the gasoline from the fuel tank and carburetor.