The present invention relates to a support device for a multi-functional lawn mower, which has been developed to reduce the load exerted on a worker by the weight of the lawn mower, and to enable him to readily adjust the height of the cutting level of the mower from the ground watching the bottom of the plants mowed and other obstacles. In a lawn mower comprising a main body having an engine, a shaft provided with a handle, a cutting blade arranged in the lower end of the shaft so as to be rotated, and a protective cover for covering the upper and the rear side surface, the multi-functional support device connected to the lawn mower is characterized by including: a fixing bar formed from a long extended strip with one side enclosing and fixed to the shaft by means of at least two fixing brackets, the fixing bar being bent forwardly at the lower end of the shaft with the extremity having a height adjustment bolt a wheel with a wheel mounting bracket having both ends connected to both ends of a rotating shaft and extended upwardly and bent so as to face each other, the upper middle part of the wheel mounting bracket being connected to the height adjustment bolt and a guide piece having a pair of width adjustment brackets bent in a V-shape backward from the center and welded to the upper ends of both sides of the wheel mounting bracket so as to be extended backward facing each other, the pair of width adjustment brackets being provided with a long slot cut lengthwise, wherein a fixing bolt is fixedly connected to the long slot with a nut so as to adjust the rear width.La présente invention concerne un dispositif de type support multifonctionnel pour tondeuse à gazon, qui a été mis au point pour réduire leffort imposé à lutilisateur de la tondeuse à gazon sous leffet du poids de cette dernière, et pour lui permettre de régler facilement la hauteur de coupe de la tondeuse par rapport au sol en fonction des plantes coupées et des obstacles. Ladite tondeuse à gazon compre
