NOTE: Several new videos are in production, 11/30/21.
A lot of people buy inverter generators made by a variety of companies; Ryobi, Westinghouse, WEN and a lot of others.
What you don't know is that there are very few companies that make the engines for theses. Most likely you have a Ducar engine in your inverter generator. The genset of inverter generators are all the same, only the case and control panel are different.
Here is a video that shows you how to tune your inverter generator.