BLS351 Compatible First Gear Futaba FU1K37601  [FU1K37601]

FUTABA BLS351 SERVO FIRST GEAR 1K37601 (W/O PACKING)
Price:
£3.05
Brand:
Futaba
Model:
FU1K37601
Condition:
Brand New
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Replacement part for BLS351 servos

This first-stage gear is provided as a spare item for Futaba BLS351 servos used in radio-controlled models, intended to return correct gear engagement when the original gear is worn or damaged. It is a scale spare part intended to uphold servo function and dependability.

Fitting requires opening the servo case, removing the gear assembly, and replacing the first gear while keeping bearings and spacers in their original positions. Reassemble carefully, check that the output spline and servo horn align correctly, and confirm free rotation before powering the unit to avoid any binding issues.

The first gear influences mesh and backlash during setup and tuning; fitting a new first-stage gear can remove play and improve repeatability for steering and control surfaces. After fitting, check the neutral position and run a few light-load cycles to ensure smooth operation.

Will this gear fit Futaba models other than the BLS351?

The part is intended for BLS351 units; compatibility with other Futaba models should be checked by comparing gear geometry and spline specifications before attempting to fit.

How do I set correct gear mesh after fitting?

Set gear mesh by ensuring bearings and spacers are in their original order, align the output and input splines, apply a light shim if needed, and rotate the gear train to confirm smooth engagement without binding.

Should I recalibrate the servo after replacing the first gear?

Yes — check centre position and endpoint travel after installation and perform any required adjustments on your transmitter or controller to restore accurate response.

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