S9602 Servo Gear Set Upgrade for Futaba FUAS3215 AS3215 EBS3226  [FUAS3215]

Replacement gear pack for Futaba S9602 servos

This gear set is an aftermarket replacement pack identified by Futaba model FUAS3215 and labeled AS3215 EBS3226, intended for use with S9602-class servos. It functions as a direct swap for worn or damaged internal gears to restore precise engagement and help reduce backlash when fitted correctly.

Compatibility: the set is specified for use with S9602 servos as indicated by the product naming; verify case dimensions and spline count before fitting. Installation involves disassembling the servo, aligning gears precisely, and reassembling to preserve proper mesh and horn centring.

Role in tuning: choosing a metal gear set changes durability and torsional stiffness, which can affect control feel and increase resistance to stripping under load. When replacing gears, confirm pinion alignment and ensure the servo turns freely through its travel after reassembly to prevent binding.

Fit this set when restoring worn internals on S9602 servos, follow standard disassembly and lubrication steps, and bench-test the servo unloaded before reinstalling in your model.