Futaba FU1K37601 BLS351 First Gear Replacement  [FU1K37601]

FUTABA BLS351 SERVO FIRST GEAR 1K37601 (W/O PACKING)
Price:
CAD$5.70
Brand:
Futaba
Model:
FU1K37601
Condition:
Brand New
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Direct replacement first gear for BLS351

This replacement first gear is supplied as a service component for Futaba BLS351 servos used in radio-controlled models, designed to restore correct gear engagement when the original first-stage gear is worn or damaged. It serves as an RC-scale spare to preserve servo performance and reliability.

Installation involves opening the servo case, removing the gear stack, and swapping the first gear while keeping bearing and spacer positions intact. Reassemble carefully, ensuring the output spline and servo horn line up correctly, and confirm free movement before applying power to prevent binding.

During tuning and regular maintenance the first gear has a direct impact on gear mesh and backlash; fitting a renewed first-stage gear can reduce slop and increase repeatability for steering and control surfaces. After installation, check neutral position and run several low-load cycles to verify smooth operation.

Does this first gear fit other Futaba servo models?

This gear is specified for BLS351 servo units; fitment with other Futaba models is not assured. Confirm gear dimensions and spline compatibility before attempting to fit it into a different model.

What are the basic steps to replace the first-stage gear?

Remove the servo cover, note gear order and spacer placement, extract the worn first gear, install the replacement in the original orientation, then reassemble in the same sequence and verify mesh and neutral before full use.

Will swapping the first gear change my servo tuning?

Replacing a worn first-stage gear can reduce mechanical play and improve consistency, but you should recheck servo centring and endpoint settings and perform a few test cycles to confirm final tuning.

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