A walk-behind tiller includes a transmission case (30), a main clutch operating lever (400) which switches between connection and disconnection of transmission of the driving power from the engine (20), main clutch lock lever (500) which restrains a switching operation to the connection performed by the main clutch operating lever (400), and releases the restraining, and a parking brake lever (600) which switches between operation and release of a parking brake device (100) which stops a movement of the traveling wheels (2R, 2L), wherein the main clutch operating lever (400), the main clutch lock lever (500), and the parking brake lever (600) are arranged on any one side part of a left side part and a right side part of an operating handle (60) which extends reward from a vehicle body.
