... as following: ModelYM188FTypeSingle-cylinder,vertical,4-stroke air-cooled diesel engineCombustion systemDirect lnjectionBore X Stroke(mm)88x86Displacement(cc)523Engine Speed ... Hi sir,Good day!We are a professional production of various kinds of generator,engine,motor, water pump, etc of ... .Should you have any question,pls don't hesitate to contact me. marine diesel engine YM188F (engine part)