1.General
12R1
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
(2) Label location:
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
6 : 2006
7 : 2007
8 : 2008
5*: 2005
006756-00E
EPA/ARB certification plate
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