Abstract: The invention relates to a lawn mover, comprising a body portion (1), a power unit (14) mounted on the body portion, and blade members (2), rotating substantially in a horizontal plane and fixed to the lower end of a substantially vertical driving shaft (10) inside a cutting chamber (12) provided by body (1). The inner surface of said cutting chamber (12) in body portion (1) is provided with a material (15) having a low friction coefficient. The power unit (14) preferably comprises a permanent magnet direct-current motor. Blade members (2) are made of a sheet-like material. The blade member mounted on either side of said driving shaft (10) of blade (2) is, from its end and over part of its length, designed in a manner such that, as seen in its rotating direction, the leading edge of the blade lies at a level substantially lower than the rest of the blade. The plane of rotation defined by said lower leading edge is located approximately 10-15 mm above the bottom edge of cutting chamber (12).