Lifan LF2V78-2DQS Industrial Grade 22 HP 688cc V-Twin 4-Stroke OHV Gas Engine with Electric Start and 1-Inch Shaft Industrial grade gasoline V-Twin OHV engine with 1" output keyway shaft Low oil engine shutdown protection. 8.3:1 compression ratio Oil cooler and horizontal mount muffler included Electric start Replaces Honda, Briggs, Kohler, and other brands; EPA certified