RE: voltage regulator-Where is it?
can't speak for the engines in the Onans, but can about the honda engined gens - i've got a honda gen (13KW) at the house, 20HP V twin, and in researching it before the purchase, honda indicates a 2500 hour life expectancy before rebuild or replacement. That engine has an oil cooler - on the smaller engines, without an oil cooler, i would expect a shorter life expectancy
just 02