This Futaba FUAS3091 servo case set provides a direct replacement housing for the S9202, S9304 and S9403 servo models noted in the product name. The description focuses on installation, maintenance roles, and how a new case supports tuning and repair work on RC models.
Parts are supplied as a case set without original packaging and are intended as like-for-like body replacements for affected servo assemblies. Confirm the servo model stamped on your unit matches S9202, S9304 or S9403 before you attempt installation to ensure correct fitment.
Installation guidance: switch off the transmitter and remove the servo from the model prior to opening the case, maintain gear alignment and centring marks, and keep original bearings or shims when moving internals. These housings are not designed to alter internal gear ratios or electronics and are meant for repair and maintenance.
Using a replacement case can restore correct mounting points and horn alignment after crashes or wear, improving steering repeatability and simplifying rebuilds. After reassembly, confirm servo centre and end points and carry out a bench check before fitting back into the model.
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