Futaba FU1K13201 Servo First Gear replacement for Futaba S9450 servos  [FU1K13201]

Replacement first gear for S9450 servo

This FU1K13201 item is a genuine Futaba first gear intended as a direct replacement part for Futaba S9450 servos. It is an RC-scale drivetrain component used to restore proper internal gearing when the original first gear shows wear or damage.

Compatibility is limited to the servo models identified by the product name, so confirm the S9450 designation before ordering. Installation requires opening the servo case, careful removal of the servo output train, and reassembly while observing gear mesh and bearing alignment. Use light, purpose-specific grease on gear teeth and avoid over-tightening fasteners to prevent binding.

In setup and tuning, replacing a worn first gear helps recover smooth center finding and consistent speed response, which supports precise steering or actuator feedback in small-scale RC models. After replacement, verify full range motion and check for abnormal noise before returning the servo to service.