You'd be better off buying a used RV genset - an Onan, Kohler or Generac - from a used parts place / junkyard / RV Salvage yard. Or on craigslist. If you need new, the easy route is to find one you can tote along somehow, after you ensure it's got enough amps to start up your AC and whatever else you'll use it for.
http://www.rvdoctorgeorge.com/http://www.rvsurplussalvage.com/catalog/display.php?category_id=34http://colawrvsalvage.com/usedParts.aspIf your generator will not put out any voltage at all, check for blown fuses or circuit breakers before you give up on it.
