S9075 / S9157 First Gear for Futaba - FU1K39101 (fits BLS152 BLS157HV BLS172SV/HV BLS177SV) (w/o packing)  [FU1K39101]

First Gear Description

This first gear is a direct-fit replacement for the Futaba servo models named in the title. It is provided without retail packaging and serves as the internal gear in the primary reduction stage of those servos.

Compatibility is restricted to the explicitly listed models: S9075, S9157, BLS152, BLS157HV, BLS172SV/HV, and BLS177SV. Verify your servo model code before ordering to ensure correct fitment.

Service guidance: always remove power and open the servo case carefully, keep track of washer and bearing order during disassembly, and line up splines correctly when installing the new gear. Manually check gear mesh and axial play prior to powering the servo. This part is intended for maintenance and repairs rather than for altering performance characteristics.