Futaba FUEBS3374 BLS154 Servo Internal Gear Replacement AS4167 EBS3374  [FUEBS3374]

This Futaba FUEBS3374 gear set functions as a replacement pack for BLS154-series servos, supplying the internal gears required when factory components become worn or damaged. The spare gears restore correct tooth engagement and help eliminate slack in steering or control linkages.

Installation overview: remove the servo lid, record the order and orientation of the gears, extract the defective gear(s), transfer over any reusable bearings or bushings, fit the replacement gears in the original alignment, and verify mesh and endplay prior to resealing. Standard small drivers and a controlled workspace are recommended for the procedure.

Tuning role: installing new gears recovers repeatable centring and steady feedback from the servo, which supports precise steering input and predictable behaviour while dialing in model trims.

Notes and handling: keep lubricants minimal to avoid trapping debris, ensure the output spline seats correctly, and cycle the gear train after reassembly to confirm smooth, quiet operation before refitting the servo.