PURPOSE: To carry out smooth refueling and to miniaturize a device by providing a reel winding a line member around it in the inside of a refueling system main body free to rotate and providing a means to put the line member in and out by moving in the axial direction on an outer peripheral part of the reel.

CONSTITUTION: An input fuel fixture 42 is made to pass through an intermediate part bulkhead part 24 of a refueling system main body 10, and it is communicated to an input end part of a hose 44 through an input air charging chamber 58. Thereafter, the hose 44 is wound around an outer periphery of a cylindrical reel 52 supported free to rotate through a double bearing 54 on the input fuel fixture 42. In the meantime, a rear end part of the cylindrical reel 52 is supported on an output shaft 76 of a gear system 74 installed on a rear part bulkhead part 26, and a motor 70 is installed on the gear system 74. Additionally, a pulley 84 to support the hose 44 coming in and out of the refueling system main body 10 is attached on an outer peripheral part of the cylindrical reel, 52 through a movable reciprocating body 86. Consequently, storage of the hose 44 is carried out compact and drawing-out of the same is carried out smoothly.