A tiller (100) includes traveling wheels (4L and 4R), plural tilling claws (6), an engine (15), and a transmission case (2), and the tiller includes a main clutch lever (18) which switches connection and disconnection of transmission of the driving power, a driving shaft of traveling system (40), whose one end part (41) protrudes from the transmission case, the one end part (41)being provided with a parking brake groove (41 a), and a parking brake lever (311) which has a parking brake pin (301) being engageable with the parking brake groove (41 a) of the driving shaft, and which is capable of stopping and releasing of the driving shaft (40), wherein by operating the parking brake lever (311) to stop the rotation of the driving shaft, the parking brake pin (301) is engaged with the parking brake groove (41 a), so that the rotation of the driving shaft (40) is stopped.
