Getting generator to idle high for small appliances.

I have a 2000 Arctic Fox 5er, and if they used the same generator, it is the Generac Impact 36. It is an inverter generator, and will idle down with lighter loads, just like my Hondas do. It should definitely give power to the coffee pot at idle. I took mine out and use my Hondas, they are MUCH quieter and don't eat up my propane. Other than not starting well, I had no problems with that Generac.
It would be cheapest to buy a Killawatt meter and then check it. Those can be a good troubleshooting tool.