The machine has multiple harrow tines (3) spaced apart from each other and arranged at a U-shaped carrier (2), where the harrow tines are made of single piece spring steel and are swingable between two positions. Adjacent harrow tines are attached by a bearing part (5) arranged at the carrier. The harrow tines comprise orthogonal bearing legs (6), which are transversely arranged on an upper end of each harrow tine in a longitudinal direction of the harrow tines, where the orthogonal bearing legs support the bearing part at the carrier.