Small Engines (Lawn Mowers, etc.): generator engine surging, ohv engine, ring gasket

Question
hi, i'll try to give you as much info as possible. the generator is made by united power. it is a 13h.p knock-off of a honda ohv engine. the motor is surging. it is brand new and i have checked fuel flow and carb for restrictions. none. it will run slightly better on choke, but not much. i don't know much about governors. could it need adjusting?  thanks

Answer
Andy

If the Engine idles roughly, unevenly, or surges.
Possible causes:

  1. Carburetor is dirty.
  2. Air leak in carburetor or intake manifold (e.g., bad O-ring, gasket, primer).
  3. Carburetor is improperly adjusted or needs service.

Or If the Engine still operates erratically, surges, and runs unevenly.
Possible causes:

  1. Fuel line or fuel tank cap vent is clogged.
  2. There is water in the fuel.
  3. Fuel pump is defective.
  4. Governor is not set properly, sticking, or binding.
  5. Carburetor needs adjustment or service.
  6. Loose carburetor/intake pipe resulting in vacuum leak