This servo case set is a direct-service accessory referenced by Futaba FUAS3097 and part code EBS3221, intended for use with Futaba S3401 and S9404 radio-control servos. It is supplied without original retail packing and is intended as a replacement outer housing for routine maintenance or repair work on model servos.
Use this case set when replacing a damaged outer shell or when preparing a spare set for track-side or field service. The set supports basic installation and swap tasks common in RC repair: removal of the old case, transfer of internal gears and electronics, and reassembly. It is described as a component-level part rather than a complete servo assembly.
Installation notes: work in a clean workspace, keep small parts organised, and follow typical servo teardown precautions such as marking gear orientation before removal. This case set supports serviceability and reduces downtime by allowing quick replacement of the external housing without sourcing a full new servo.
Role in setup and tuning: while the case itself does not change servo performance, having spare housings simplifies repairs after crashes or wear, keeping tuning and setup cycles shorter by making servos available for immediate reuse after internal servicing.
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