Futaba FUAS3185 Servo Gear Set for S136G servos AS3185 EBS3184  [FUAS3185]

Replacement gear pack for S136G servo

This RC-scale accessory is a replacement gear set intended for Futaba S136G series servos, supplied with part references AS3185 and EBS3184. It is presented as a direct swap option for worn or damaged gear trains in hobby radio control servos.

The set's role is straightforward: restore mechanical engagement, reduce play from stripped or chipped teeth, and return servo action to nominal performance. This write-up focuses on compatibility, basic installation approach, and how the gear set fits into routine tuning and maintenance for radio control models.

Installation notes: remove the servo case and inspect internal bearings and pinion fit before replacing gears, keep the gear stack orientation and spacer positions identical to the original, and verify end-to-end movement without binding before reassembling into the model. Standard small hex drivers and a clean workspace are recommended; no specialised tools are required beyond common hobby hand tools.

Tuning and service context: replacing worn gears is part of drivetrain maintenance and can prevent inconsistent steering or throttle inputs caused by slop. After replacement, check servo centring and endpoint settings in your transmitter and test under load at low speed to confirm smooth operation.