Futaba FUEBS3411 Replacement Gears for BLS174HV and BLS174SV Servos  [FUEBS3411]

Servos Gear Repair Guide for BLS174 Models

The gear set is supplied as a model-grade replacement for Futaba BLS174HV and BLS174SV servos, carrying the reference FUEBS3411 and linked to AS4189 and EBS3411 identifiers. Its purpose is to replace worn gear elements and re-establish proper mechanical drive.

This note focuses on correct assembly and workshop technique rather than claiming performance gains. When installing, maintain the original bearing and spacer order, check mesh alignment, and ensure the case halves are oriented correctly to avoid interference.

For tuning implications, verify neutral alignment and end points after reassembly and test under light load before returning the servo to full duty. This item is identified as a hobby repair part for RC models.