...How good is the warranty on these cheap China built units?
Harbor Freight has these generators, 7KW but only a 90 day
warranty. Wonder why....
The simple explanation is this. The cheap units are warranted against failure during the period that most failures would occur--unless the unit is/was misused or not maintained properly. Knockoff manufacturers will use whatever parts are shipped to them, so they only warrantee their units for a short period. That is all that is really needed--at the price those units are sold for. You get what you pay for--and you take your chances.
Honda and its dealers charge higher prices and give longer warrantees because of the more rigidly controlled manufacturing process and the tighter quality control on the parts used. That is why they'll offer longer warrantees--they KNOW their equipment will last, and they'll not lose money on that longer warrantee.
If Honda turns away a shipment of parts for quality issues, that shipment is sent to others who use those parts for their units--such as the Chinese knockoffs. The parts may be perfectly good--and that is why not too many of the knockoffs have issues. There again, a few of those parts may be bad, and that accounts for the higher failure rate of the knockoffs.
If you want quality and solid, issueless performance, get Honda. If you want something that will work, but you're willing to take a chance on it, get the knockoff brand. Simple explanation--and solution.