The Hirobo HI0403221 cover stay is supplied as a replacement part for the GPH 346 helicopter series. It secures the fan cover and helps the cooling assembly remain stable under normal flight and handling conditions.
Fitting on GPH 346 mounts is straightforward: remove the existing cover fasteners, position the stay to match the cover and frame points, and refit using the original screws. Special adapters are not normally required; confirm screw engagement and check clearance before flying the model.
For servicing, the stay keeps the fan cover correctly seated to maintain intended airflow routing, aiding predictable cooling behaviour from the fan. Fit a new stay when mount points become loose or show wear during inspections.
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