Genour engine for improved fuel efficiency, longer life, easier maintenance, and less noise then conventional engines. Prepackaged unit with prewired manual transfer switch with 16 circuits and enough power to start a 5-ton A/C unit or two 4-ton units! OHVengine's automotive-type full pressure lubrication system eliminates wear during startup and provides max. lubrication and cooling during the most demanding conditions. Includes maintenance-free battery and pneumatic wheel kit. EPA and CARB certified.