engine,Diesel engine,air-cooled diesel engine air-cooled, vertical, single cylinder, 4-stroke, 4 - 9HP diesel engine* DescriptionO EPA Exhaust Emission CompliantO The miniaturized fuel ... Shaft OptionsO Electric and / or Recoil Start* Models: * HP170F(E): 3.1kW (4.2hp) at 3, 600 rpm* HP178F ... HP186F(E): 6.8kW (9.2hp) at 3, 600 rpm* HP186FA(E): 6.8kW (9.2hp) at 3, 600 rpm Air Cooled Diesel Engine