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PROBLEM TO BE SOLVED : To suggest an accessory of a tiller capable of preventing inflow of earth and sand into rotors. ŽSOLUTION : The accessory of tiller includes : plates (side plates) 1 connected to the ends of rotors 2; and restricting plugs 7 inserted into inserting holes 1d formed in the plates 1, in which projections (rotation members) 6b formed in other accessories (wheels for transfer) 6 when the other accessories 6 are attached to the plates 1. The restricting plugs 7 have inserting parts 7A inserted into the inserting holes 1d and locking parts (projections) 7C locking with the plates 1 when inserting parts 7A are inserted into the inserting holes 1d, and groove parts 1j in which locking parts 7C are inserted are formed in the plates 1 and wall faces of the groove parts 1j are opposed to the locking parts 7C in the circumferential direction of the inserting parts 7A and raises from the insides of the groove parts 1j to the outsides. ŽCOPYRIGHT : (C)2010, JPO&INPIT Ž