Lifan LF2V78-2DQSC Industrial Grade 22 HP 688cc V-Twin 4-Stroke OHV Engine with Electric Start, 1-Inch Keyway Shaft and 22 Amp Charging System Industrial grade gasoline V-Twin OHV engine with 1" output keyway shaft 22 amp charging for external electrical power; low oil shutdown engine protection Oil cooler and horizontal mount muffler included Electric start and 22amp charging system Replaces Honda, Briggs, Kohler, and other brands; EPA certified