This solenoid operating device (8) is provided with: a mover (12) for the solenoid operating device (8); a drive coil (input/opening coil) (10) that generates magnetism by the flow of electricity and imparts a drive force to the mover (12); a permanent magnet (14) that holds the mover (12) within a stator (11); and a holding force adjustment member (15) that adjusts the holding force of the permanent magnet (14) on the mover (12). The holding force adjustment member (15) is removably provided in a location that does not form the main magnetic path for the magnetic flux brought about by the drive coil (input/opening coil) (10).