Hmmnnn, so it says that the engine is "Honda Derived", does that mean that Honda is supplying the engines, or does it mean that it's a Chinese knockoff of a Honda engine as Strybee suggests?
A friend sent me a scary series of pics about a Chinese knockoff of a Honda engine, on the upper right side of the crankcase there's a small cover secured with 3 screws, on the genuine Honda engine it's a cover for the oil filter, on the knockoff, it's just a cosmetic cover, there's no oil filter! Check it out, after looking at this I doubt if I'd buy a Chinese bike.................. 
http://imgur.com/a/ksSha
Right you ate mate, they are knockoff motors. They have flooded the US market with generators and replacement motors. The rumor has been circulated that the motors are made under license from Briggs and Stratton.
What people report is that the clever bastards made them so you can put a lot of OEM Briggs parts in their motors.
I had one of these generators that put out 3,500w. It ran very well and it ran for daily outages from a couple of ice storms. During Hurricane Sandy it ran almost two weeks during and powered the essentials. I did change the oil every couple of days.
When we moved my parents into assisted living they had a two year old 17KW Generac natural gas unit, so I am having it installed here as we speak. I sold the little Chinese unit to a Mexican for $120.
G'Day Bobby, yeah those new natural gas gennies are interesting, I've been playing with generators for the past 38 years from when I joined the army, and back then, most of hours were of US origin, and no offence to 1960's US engineering, but they were #$%*e. The first Honda powered gennie I ever used was a revelation, it started first pull of the starter cord, and sipped fuel very economically, didn't ice up the carb, and didn't leak oil, plus it was mechanically quiet!
I've got a couple of cheap gennies that I use once every blue moon when it gets so hot that everyone in my suburb turn on their air conditioners and blow the transformer at the local power station. It's nice being able to watch TV with a light on, while drinking cold beer and listening to my neighbours whine. Both gennies have "Honda derived" engines, (obviously Chinese and probably not licensed, for the price) and I'm amazed at how forgiving they are, they'll still start and run on gas that's several years old. I must pull them out and give them a service, I think I remember where I left them?
