Does a lawn mower have catalytic converter like in car?

Most lawn mowers do not have catalytic converters. Catalytic converters are devices that reduce the pollutants in the exhaust gases of internal combustion engines. They are used in cars and other vehicles to reduce emissions of harmful pollutants, such as carbon monoxide, nitrogen oxides, and hydrocarbons. Lawn mowers typically have small engines that do not produce enough emissions to require a catalytic converter.