Just wanted to share a silly issue I've come across on 3 separate generators now. A customer calls and tells me that there lights are dimming under generator power, and it sounds like the engine is hunting or surging.
Experience has taught me to first check airflow. So I lift the airbox cover, and the engine smooths out. Filter is good.. Stepper motor functioning.. So I look further down the air intake.
Turns out, the wire harness under the controller was hanging too close to the intake above the battery and being sucked in just enough to restrict airflow. A couple zip-ties and the problem is solved.
Easy fix, but could be a head scratcher if you've never seen it before!
GOOD FIND !!! This could possibly be a lot of people's problems !!! There have been quite a few "surging & hunting" threads on here recently.
Probably someone on the assembly line left a tie or two out, or a clip, and it could probably happen on any model. It's easy enough to check on any system.