Replacement First Drive Gear for Futaba S9203 S9205 S9250 - FU1K03201  [FU1K03201]

First Drive Gear for S9203/S9205/S9250 Servos

This FU1K03201 first gear is a Futaba replacement intended for RC servos S9203, S9205 and S9250. It transmits motor movement into the gear train and is commonly replaced when the servo is rebuilt or serviced.

Compatibility is restricted to the listed Futaba models, so confirm that your servo's case and gear stack follow the S9203/S9205/S9250 arrangement before purchase. The item ships alone without additional hardware or packaging and is designed to directly replace the original first gear in compatible units.

Installation notes:

• Carefully remove the servo cover and record gear positions to keep original mesh and shim settings.
• Check neighbouring gears and bearings for wear; replace any damaged parts before refitting the new gear.
• Refit with correct mesh, then bench test at reduced voltage to ensure smooth operation prior to reinstalling in the model.

Tuning and maintenance role:

Replacing the first gear restores predictable gear engagement and helps eliminate jitter from worn teeth. Combine this with an inspection of the output spline and bearings to maintain consistent steering and control response.