PROBLEM TO BE SOLVED: To suppress battery consumption and extend continuous usable time of a battery.SOLUTION: In a walking type tending machine of one embodiment that transmits rotary driving force of an electric motor 17 operated by electric power supplied from a battery 10 to a work shaft 4, torque that is transmitted to the work shaft 4 is controlled so that the output torque Mof the electric motor 17 falls within a predetermined range. In another embodiment, torque transmitted to the work shaft 4 of a rotary type tiller 20 is controlled by controlling a speed change gear 18 so that the output torque Mof the electric motor 17 falls within a predetermined range.
