First Gear - Futaba FU1K10001 for S9602 Servo  [FU1K10001]

Primary gear replacement for S9602

Supplied as a service spare for the Futaba S9602 servo, this first gear is intended for hobby-grade RC applications. It acts as the primary element in the gear train and is used when the original gear is damaged, worn, or during preventative gearbox servicing.

Installation is accessible to users familiar with small servo disassembly: open the case, mark the gear sequence, install the replacement first gear and reassemble while ensuring correct mesh and alignment. Clean gear teeth and inspect surrounding bearings and splines for wear to avoid premature problems.

For tuning and upkeep this part renews the mechanical connection between the servo output shaft and the rest of the gear train. A new first gear preserves repeatable centring and reduces backlash from damaged teeth, helping to maintain consistent servo action in scale RC models.