1.general
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1.6 Exhaust gas emission regulation
3YM30/3YM20 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 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
4YDXM1.64D3N and this identifies
(2) Label location:
YYDXM1.64D3N and this identifies
4 YDX M 1.11 P 3 N
Method of air aspiration
Number of cylinders
Combustion chamber design
Displacement (liter)
Marine engine
Yanmar
*2004 Model Year
6 : 2006
7 : 2007
4*: 2004
5 : 2005
EPA/ARB certification plate
Summary of Contents for 3YM20
Page 1: ...M9961 03E100 ...
