Air-Cooled Diesel Engine Motor Machinery Engine(GE178F) 1.Tapered Type, 2.Thread Type, 3.Key ... Type. Air-Cooled Diesel Engine Motor Machinery Engine(GE178F)1.Air cooled diesel engine 170F2.Output: 4HP ... PTO shafts, high pulling torque Air-Cooled Diesel Engine Motor Machinery Engine(GE178F)