Signs of surging include.
Small generator engine surging.
Stop the fuel flow to the carburetor either turn off the fuel valve or pinch off the line with a pair of fuel line pinch off pliers or a pair of vice grips.
Incorrect fuel use fuel levels and fuel quality in gas oil generators.
If your generator is surging at idle then likely this small hole is either completely plugged or very restricted.
Your generator was designed to utilize specific fuel sources and anything else may cause problems in operation and irreparable damage.
Failing capacitor or other components.
To clear out the whole simply take a single wire from a steel brush or burn the paper or plastic off of a twist tie that you would use for a loaf of bread and use the inner wire to run through this hole several times and remote.
Common issues which cause these surges include.
There are actually numerous causes for generator surging including.
This is for bowl type carburetors only.
Partial blockage of main jet.
Engine will run but it surges hunts for a constant rpm 1.
In this video first i get the generator running then i decide to do the drastic move to ream out the jets on the carb as the engine was surging.