The LEMA has been implementing voluntary regulations for exhaust gas emissions to reduce the amount of hydrocarbons (HC), nitrogen oxides (NOX), and carbon monoxide (CO) in the exhaust gases of small general-purpose spark-ignition engines with an output of less than 19 kW that are sold for use in Japan.
This time, the regulations have been revised to respond to the globalization of the domestic market and to achieve further results.

Engines subject to this voluntary emission regulation are "new small general-purpose spark-ignition engines with an output of less than 19 kW that are manufactured by member companies at factories in Japan or overseas or supplied by non-member companies and sold for use in Japan,"and engines supplied by non-member companies are also included.
In addition to the previous "engine manufacturers," the regulations now apply to member "engine sellers," "engine equipment manufacturers," and "engine equipment sellers."
"Revision_of_Phase_3_Voluntary_Emission_Regulations_for_Small_non-road_Spark_Ignition_Engines"