Lifan LF160F-AQ 4 HP 118cc 4-Stroke OHV Industrial Grade Gas Engine with 3/4" Keyway shaft, Recoil Start, and Universal Mounting Pattern Industrial grade OHV 4-stroke gasoline engine with .75" keyway shaft Compression release for E-Z starting - low oil shutdown engine protection General purpose engine with universal mounting plate: great for recreational vehicles, construction, farm, and ranch Industrial grade with automotive grade parts Replaces Honda, Briggs, Kohler, and other brands; EPA certified