Generac Portable Products 9777 4000 Watt Extended Life Premium Generator with Wheel Kit and Storage Cover Powered by a Generac OHVI extended life engine with full pressure lubrication Ultra-quiet large muffler and intake silencers keep noise to a minimum Auto voltage regulation holds voltage steady for use with sensitive electronics Auto idle control saves fuel by idling engine down when no load is needed Non-CARB Compliant/Not For Sale In California