... combustion.Air-cooled, 4-stroke,Vertical,Single-cylinder, Direct injection combustion.Air-cooled, 4-stroke,Vertical,Single-cylinder, Direct injection combustion.Air-cooled, 4-stroke,Vertical,Single-cylinder, Direct injection combustion.Air-cooled, 4-stroke,Vertical ... .5/3000 2.8/36003.7/3000 4.0/36003.7/3000 4.0/36005.7/3000 6.3/36005.7/3000 6.3/3600Lowest speed ...