Small Engine Troubleshooting Problems? Ask a Mechanic Now.
It is very doubtful that the carb is the issue. It is morel likely something else.
What is the serial number of the genset?
What you need to do is a procedure called the "Fixed excitation/rotor amp draw".
Do all of the steps, and let me know the results.
I have uploaded the procedure for you.
Click here to download it.
Did you do the test?