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IMPORTANT INFORMATION OF EMISSION REGULATION
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GLISH
IMPORTANT INFORMATION OF EMISSION REGULATION
1. EXHAUST SYSTEM (COMMON)
THE WG1605-E3 ENGINE MUST USE THE BELOW CATALYTIC PARTS.
THE WG1903-E3 ENGINE MUST USE THE BELOW CATALYTIC PART.
THE WG2503-E3 ENGINE MUST USE THE BELOW CATALYTIC PART.
THE WG3800-E3 ENGINE MUST USE THE BELOW CATALYTIC PART.
Any modifications to the fuel system or any adjustments made on this engine will cause this engine to be in non-
compliance with emission regulations.
2. LPG REGULATOR WITH VAPORIZER (WG1605-L-E3 / WG1605-GL-E3 / WG1605-LN-E3 / WG1903-L-E3 /
WG1903-GL-E3 / WG1903-LN-E3 / WG2503-L-E3 / WG2503-GL-E3 / WG2503-LN-E3 / WG3800-L-E3 / WG3800-
GL-E3 / WG3800-LN-E3)
When operating WG1605-L-E3 / WG1605-GL-E3 / WG1605-LN-E3 / WG1903-L-E3 / WG1903-GL-E3 / WG1903-LN-E3 /
WG2503-L-E3 / WG2503-GL-E3 / WG2503-LN-E3 / WG3800-L-E3 / WG3800-GL-E3 / WG3800-LN-E3 on LPG, only a
KUBOTA genuine regulator assy (D-STAGE) and lock off valve with LPG filter can be used.
Only this regulator assy (D-STAGE) and lock off valve with LPG filter can be installed by an authorized KUBOTA
DISTRIBUTOR or the manufacturer of the equipment in which this engine is used.
To conform to U.S. EPA Phase 3, CARB LSI (Large SI) and EU stage V emission regulations,
the following standards must be followed before using the WG1605-E3 / WG1903-E3 /
WG2503-E3 / WG3800-E3 engine.
GENUINE PART
PART NO.
CATALYTIC CONVERTER
EG523-1212
CATALYTIC MUFFLER
EG526-1211
EG541-1211
GENUINE PART
PART NO.
CATALYTIC CONVERTER
EG523-1212
GENUINE PART
PART NO.
CATALYTIC CONVERTER
EG543-1212
CATALYTIC MUFFLER
EG541-1211
GENUINE PART
PART NO.
CATALYTIC CONVERTER
EG504-1212
EG523-8917_E.book Page 2 Friday, May 17, 2019 10:32 AM