The Futaba FUAS3090 servo case set (AS3090 / EBS3094) is offered without retail packing and functions as a replacement outer shell for S9102-series servos used in hobby radio-control models. It allows technicians to renew a damaged enclosure or refresh older units.
Transfer the servo internals—including the PCB, gear stack, and output shaft—into the new housing to restore correct mounting and fit. This part is marketed for model applications only. Before fitting, confirm the servo bears the S9102 designation to ensure proper alignment and screw hole match.
Installation guidance: remove the servo from the model, unclip or unscrew the existing case, carefully lift the internals as appropriate, seat them in the replacement shell, and refasten using the original hardware. After reassembly, fit the horn and briefly power the unit at low throttle to verify neutral position prior to final mounting.
Field advice: useful for repairing broken mounting ears and cracked shells, the case helps keep consistent installation when setting up or tuning servos across small-scale cars, boats, and aircraft models.
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