Futaba FU1K10001 Replacement First Gear for S9602 Servo  [FU1K10001]

Replacement primary gear for S9602 servos

This replacement is supplied as a service part for the Futaba S9602 servo and is aimed at hobby RC use. It performs as the main gear in the servo gearbox and is installed when the original component is worn, chipped, or during planned gearbox maintenance.

Removing and refitting the gear is manageable for those with experience on small servos: remove the case, note the order of gears, swap in the new first gear, and reassemble ensuring correct tooth mesh and alignment. Verify cleanliness of gear teeth and check adjacent bearings and splines for wear before completing the rebuild.

As part of routine tuning and care this component restores the mechanical interface between the output shaft and the gear train. Replacing a degraded first gear helps retain accurate centring and cuts down on backlash caused by damaged teeth, supporting reliable servo behaviour in scale RC projects.