1.General 1.6 Exhaust gas emission regulation 3YM30/3YM20/2YM15 series engines are applicable with Off-road Compression Ignition engines regulations of the EPA and ARB (,California Air Resources Board) in USA and BSO regulations in Europe.
1.6.1 Engine identification (EPA/ARB) With the regulations on exhaust gas emission worldwide, it has become necessary to identify engines in a manner to determine which regulations they comply with, hence (1) Emission control label (EPA and ARB) (EPA and ARB label) (Note) Emission Control is accomplished through Engine Modification (EM-Design) The tamper resistance device is installed with EPA/ARB certified 3YM30/3YM20/2YM15 series engines to prevent illegal change of fuel injection volume and high idling speed. (Fuel injection volume : cap type, High idling speed :
cap type) Engine family name as assigned by EPA/ARB identifying engine family group 5YDXM1.11P3N and this identifies YYDXM1.11P3N and this identifies 5 YDX M 1.11 P 3 N Method of air aspiration Number of cylinders Combustion chamber design Displacement (liter) Marine engine Yanmar *2005 Model Year 5*: 2005 6 : 2006 7 : 2007 8 : 2008 006756-00E (2) Label location: EPA/ARB certification plate 12R1