Futaba FUEBS3411 Servo Gear Set for BLS174HV and BLS174SV Replacement Gears  [FUEBS3411]

Servo Gear Replacement for Futaba BLS174 Series

This gear set is an RC-scale replacement intended for Futaba BLS174HV and BLS174SV servos, supplied under part reference FUEBS3411 and linked to AS4189 and EBS3411 identifiers. It is intended to restore mechanical drive inside the servo when original gears show wear or damage.

The write-up focuses on fitment and practical workshop tasks rather than performance claims. When replacing gears, verify servo case orientation, preserve bearing and spacer positions, and keep gear meshing alignment consistent to avoid binding during operation.

For tuning and setup, inspect the servo for excess backlash after reassembly and confirm the horn and spline engagement are correct before applying load. This part is described strictly as a model-grade servo repair component for hobby RC use.