JR Propo JRSG4000 Servo Gear Set for 4000 4135 4735  [JRSG4000]

Maintenance notes for JR Propo servos

This gear set is a replacement for JR Propo servos identified by the 4000, 4135 and 4735 model codes. It restores proper gear mesh and smooth response while leaving the servo case and electronics unchanged.

Compatibility is restricted to the listed model numbers, so check your servo before purchasing. When replacing gears, follow the original stacking and orientation and inspect bearings and shafts so that reassembly yields correct operation.

As part of regular servicing or when improving servo reliability, focus on correct mesh, unobstructed rotation and absence of binding to extend the unit's serviceable life.