PURPOSE: To narrow travel devices left and right in a pair and make a small working vehicle by facing a pair of travel drive motors to the upper part of the inward side of a vehicle body, facing the vehicle body to left and right, and juxtaposing the motors in the lengthwise direction of the vehicle body

CONSTITUTION: In each of crawler mounted travel devices 1A, 1B left and right in a pair, a track frame 8 is connected to a vehicle body and the frame 8 is provided with a compensating wheel 9, a rolling wheel 10 and a driving wheel 11 at its front end, its middle and its rear end, respectively, which wheels are all wound with a rubber crawler 12. Besides, guide members 13 are used to prevent the rubber crawler 12 from slipping off and installed between the wheels 9, 10 and between the wheels 10, 11. In this case, each of deceleration cases 14 left and right are constituted of an outer case 15 on the side of the wheel 11 and of inner cases 16, 17 inside one of the travel devices 1A, 2B. The inner cases 16, 17 are formed so different in shape that connection seats 16a, 17a for hydraulic motors 18 may be different in position. Namely, the hydraulic motors 18 left and right are faced to the upper part of the inward side of the vehicle body in the deceleration case 14, with the vehicle body faced to left and right, and are juxtaposed in the lengthwise direction of the vehicle body.