This is the fix for your predator 3500 inverter generator that keeps surging. I accidentally call it a 3,000 at the beginning but all the info is correct. The problem is NOT the airflow so stop drilling holes. It’s the fuel. I’ll show you how to clean your jet. This was my 2nd generator within 3 months with the same issue.

Make sure you drain your carb and float of gas when you go to store this machine. Your welcome!