MODEL:K4100D Type:Vertical in-line, water cooling ,4-stroke Aspiration:Natural asoiration Cobustion method :Vortex Bore*stroke mm: 4-100*115 Displacement L:3.61 Rated power kw(ps)/r/min:30.1/1500 Cooling method :Forced water cooling Starting method :Electrical start Lubrication method :Pressure and splash compound