SD178/E is air-cooled diesel engine, 4 stroke engine, direct injection engine, 4 hp engine, Electric start, EPA and CE approved. SDS provide both ... to 16hp.1, Diesel engine 4hp, 7hp, 9hp and 10hp.2, Gasoline engine 5.5hp, 6.6hp, 8hp, 9hp, 13hp, and 16hp.To ... make sure that every engine has a reliable performance ...