First out of the gate.... any of us who have done development work, have memories of lack-of-sleep due to teething issues....I agree!
Prior to Y2K I bought a Generac XL4000 because it was the first small engine that I saw with an oil filter. It was quite problematic because it kept leaking oil from the oil seal between the generator. Require splitting the unit to replace seal.
New seal also leaked so another teardown
Put engineering hat on and found that oil pressure was causing leakage due to oil drain hole being too small causing back pressure.
Enlarged hole & problem solved.
Nice generator but thru testing I found it had more hp than electrical generating capacity.
At the rated load of 4000 watts voltage was approx 100 volts @ 60 hz.
Max load less than 3500 watts before voltage dropped below 110 volts.
This was no fluke because I tested 3 identical generators.
In my opinion any generator should be tested for proper voltage, hertz & capacity before being used.
Advertised ratings are just a sales pitch unless proven!!
I still have one because it is reliable with no leaks & I know its limits.
90cummins
I don't think (not that my memory is faultless
Obviously surge-rating matters, but I'm always irritated when that # is a MUCH larger text-size than the sustained rating on the small gens.
Rgds, D.