To make the machine body of a rice transplanter more compact by arranging the pump shaft of a pump in the machine body longitudinal direction, and interlocking and connecting it to the output shaft of an engine arranged in the machine body longitudinal direction through an endless body.

An opening for integrating a hydraulic pump 40 is provided on the front of a side case 33, and blocked by a pump cover 36. The pump shaft 26 of the hydraulic pump 40 is longitudinally erected and rotatably supported between the pump cover 36 and a center section 37, the front end of the pump shaft 26 is protruded forward over the pump cover 36, and an input pulley 26p is fixed to the tip thereof. On the other hand, the output shaft 9a of an engine 9 is situated substantially in the lateral center of a machine body in a plan view so as to have a relation that it is offset substantially in parallel to the pump shaft 26, and an output pulley is fixed to the tip thereof. A belt 18 that is an endless body is wound around the output pulley 9p and the input pulley 26p to interlock and connect both the shafts 9a, 26.