Futaba S3401 & S9404 Servo Outer Case - FUAS3097 EBS3221 Replacement  [FUAS3097]

Outer case for S3401 & S9404 servos

The Futaba FUAS3097 case set (part EBS3221) is designed for Futaba S3401 and S9404 radio-control servos and is supplied without original packaging. This kit provides the external shell used when servicing or repairing these specific servo models.

Keep a set on hand to replace cracked or worn housings swiftly at the track. The case supports the common service flow: remove the damaged case, transfer internal gears and the circuit board into the new shell, then refit fasteners. Remember that the kit replaces only the shell and is not a complete servo assembly.

Service advice: use an organised tray for small parts, document gear orientation, and work under good light to avoid misalignment. Having spare housings at events helps maintain consistent setup sessions by allowing immediate reinstallation of serviced servos.

Performance note: the housing does not change servo characteristics; its role is protective and structural, keeping the servo functional and mountable while you continue tuning and adjustments.