This standard specifies the categories and definitions of step-type lawn mowers (hereinafter referred to as lawn mowers) powered by gasoline engines, model preparation methods, technical requirements, test methods, inspection rules, markings, instructions for use and packaging, transportation and storage. . This standard applies to stepping lawn mowers powered by gasoline engines. This standard does not apply to riding lawn mowers, towed units with suspended passenger parts, nor to the cutting capacity of each cutting part if the cutting part is a non-metallic flexible wire or a free centering non-metallic cutter. Lawn mowers with (kinetic energy) not greater than 10J.