Futaba S9450 FU1K13201 Servo First Gear Replacement  [FU1K13201]

S9450 First Gear Replacement Overview

The FU1K13201 part is a Futaba first gear intended to replace the original on Futaba S9450 servos. It serves to restore correct internal gearing when wear or damage has impaired operation.

Compatibility is restricted to the servo models named in the product details, so double-check the S9450 designation prior to purchase. Installation involves removing the servo case, extracting the output gear train, and refitting components while ensuring correct mesh and bearing alignment. Use a small amount of the proper grease and avoid overtightening screws to prevent binding.

Fitting a new first gear can extend usable life and reinstate consistent center finding and speed response, benefitting precise steering and actuator feedback in scale RC models. Verify full travel and listen for unusual noise after reassembly before returning to service.