Small spark ignition engines for non-road machinery

In December 2010, the Ministry of Environment and Ecology (MEE) jointly with the State Administration for Market Regulation (SAMR) published the exhaust emission standard for small spark-ignition engines used in non-road machinery, GB 26133-2010.

This standard is only applicable to spark-ignition engines of more than 19 kW, with an engine displacement of less than 1 liter, except for engines used on vessels, mining equipment or rescue equipment. For example, lawnmowers, chainsaws, brush cutters, power generators, pumps, etc.

Moreover, the government divided small spark-ignition engines into hand-held engines (SH) and non-hand-held engines (FSH), further divided into seven categories with special engine codes. Each category regulated differe