The utility model provides a harvester. The harvester has the characteristics that structures of a flywheel and an output belt pulley are researched in an output part of an engine in the harvester, and thus a transmission structure which has good durability is obtained. The harvester is characterized in that the flywheel (72) which is arranged on an output shaft (71) of the engine (70) and the output belt pulley (73) which is provided with a transmission belt (74B) for leading out the power from the engine (70) in a winding way are arranged in the harvester which is used for transmitting the power of the engine (70) to a traveling device and an operation device, and the output belt pulley (73) is connected with the flywheel (72) in a position, which is closer to a center position side in the radius direction than the peripheral surface which is provided with the transmission belt (74B) in the winding way, of the output belt pulley (73).
