Ted,
I checked the air filter last night and it was very clean. I am going to change the fuel filter today.

Jon,
I have put almost 200 hours on the generator since June and almost all at high A/C load dry camping in the heat. Last trip of that type was 4 days running non-stop in Alabama in Sept. In late Oct I pulled it out and turned on 2 A/C's and ran it for an hour to excercise it.

I am worried about the vibration as the electric load kicks in and voltage fluctuation. Just don't have any experience as to whether the voltage fluctuation will cause a problem for my inverters etc.