PURPOSE: To facilitate the assembly work of a motor by installing the motor to a lid, temporarily fitting it to the connector post for motor wiring and then equipping the lid to the base.

CONSTITUTION: A lid 2 is installed to a base 1 and gears 5 and 6 are assembled to the specified position in pivotal support. Then by removing a connector 14 from a connector post 15 and connecting to the counterpart of the connector substrate of control circuit and at the same time by inserting the wiring 12 halfway to a clip 13, the assemblying of a motor 14 and wiring 12 is completed. At this time as the connector 14 for motor wiring 12 is fitted temporarily to the connector post 15 in mounting the motor 4 to the recorder, the assemblying and connecting work can easily be automated for the motor 4 and wiring 12 to the recorder.