Patent ID: 8261543

Claim:
A working vehicle with a hydraulic stepless transmission (HST) having a hydraulic pump and a hydraulic motor, comprising: a main clutch disposed between the HST and an engine; a power transmission means disposed between the HST and a wheel; an actuator changing slant angle of a movable swash plate of the hydraulic pump of the HST; and a control means controlling actuation of the actuator, wherein: a main clutch connection/disconnection detection means detecting connection status of the main clutch and a vehicle speed detection means detecting vehicle speed are provided, the main clutch connection/disconnection detection means and the vehicle speed detection means are connected to the control means, when the vehicle speed detected by the vehicle speed detection means is not less than a set speed at a time of disconnecting the main clutch, the slant angle of the movable swash plate of the hydraulic pump is held at an angle at which the main clutch is disconnected, and when the vehicle speed detection means does not detect the vehicle speed, a slant angle of the movable swash plate of the hydraulic pump is controlled so that vehicle speed is smaller than the set speed.