Worked fine right out of the box. My biggest complaint would be to relocate the carrying handles further to the sides of the generator if possible. Being a bit aged the gen isn't the lightest for two to carry. Handles closer to the edges would make it easier. Also there isn't alot of black top/concrete where we use the generator making the small wheels basically drags in softer terrain. Bigger wheels would help drastically.
I just bought generator it fired right up, let it warm up then hooked it to my trailer , started the a/c. Took 25% then fridge took another 25% ran perfect