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 diesel gasoline and gasoline engine from 4hp to 16hp.1 ... , Diesel engine 4hp, 7hp, 9hp and 10hp.2, Gasoline engine ... person to monitor the production process and do performance testing. Water-cooled Diesel Engine