Futaba FUAS3215 servo gear set AS3215 EBS3226 replacement gears for S9602 servos  [FUAS3215]

Futaba S9602 servo gear set

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 serves as a direct replacement option for worn or damaged internal gears, restoring mechanical engagement and reducing backlash when properly fitted.

Compatibility: the set is specified for use with S9602 servos as indicated by the product naming, verify fitment against your servo case and spline count before installation. Installation requires servo disassembly, careful gear alignment, and correct reassembly to maintain proper mesh and horn centring.

Role in tuning: selecting a metal gear set affects durability and mechanical stiffness, which can change feel at the control surface and increase resistance to stripping under load. When swapping gears, check pinion alignment and confirm that the servo runs freely through its range after reassembly to avoid binding.

Use this gear set when replacing worn components in S9602 servos, follow standard disassembly and lubrication practices, and test servo motion under no-load conditions before reinstalling in the model.