S9255 Compatible Servo Gear Set FUAS4128 AS4128 EBS3284 for Futaba  [FUAS4128]

FUTABA S9255 SERVO GEAR SET AS4128 EBS3284 (W/O PACKING)
Price:
£15.79
Brand:
Futaba
Model:
FUAS4128
Condition:
Brand New
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Internal gear replacement for Futaba S9255

The Futaba FUAS4128 replacement gear set is produced as a service part for Futaba S9255 servos and is referenced by part codes AS4128 and EBS3284. The text concentrates on compatibility checks, pre-install inspection, and repair guidance rather than performance promises.

Before fitting, confirm part numbers and inspect the gearbox interior for metal particles, bearing wear, and shaft scoring. Check spline engagement and endplay carefully, and only use recommended lubricants. Avoid over-tightening the output horn which can load the gear train and accelerate wear.

Replacing worn or damaged gears can restore precise control inputs by reducing backlash, but the final result depends on correct mesh, healthy bearings, and an undamaged gearbox housing. If the servo displayed unusual noises, address those root causes before refitting new gears.

Specifications

  • Item: Servo gear set
  • Model Number: FUAS4128
  • Part Codes: AS4128, EBS3284
  • Compatibility: Futaba S9255
  • Material: Not specified by manufacturer

This gear set serves as a repair option for Futaba S9255 servos, enabling replacement of failed internal gears to restore mechanical operation.

How can I confirm my servo uses AS4128 / EBS3284?

Match the part codes stamped or referenced in your service manual to AS4128 or EBS3284, and verify the servo model is S9255. If in doubt, consult official Futaba documentation or ask the seller for clarification.

Will the FUAS4128 set fit modified servos?

Fit depends on internal geometry; servos that have had their gearbox or shafts modified may not accept the standard FUAS4128 parts. Inspect the gearbox layout and compare with the original components before purchasing.

Who should perform the replacement if I am unsure?

If you lack experience with servo disassembly, seek assistance from a qualified hobby technician or service agent to avoid damage to the gearbox or electronics during the swap.

Is there a warranty on these spare gears?

Warranty terms depend on the seller. Check the purchase terms for returns or warranty coverage and keep proof of purchase if you require after-sales support.

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