O.S. Engine OS44666100 Pushrod Cover FSa-56 for FS engines, pushrod protection part  [OS44666100]

Pushrod Cover for FS Engines

This O.S. Engine OS44666100 pushrod cover FSa-56 is an RC-scale accessory intended to protect the pushrod area of FS-series engines during assembly and routine maintenance. The cover sits over the pushrod/valve train area to reduce exposure to dirt and incidental contact while you work on the engine.

The part is presented as a direct replacement or spare dress-up piece for engines that specify FSa-56 style covers; confirm the part number against your engine's service parts list before ordering. Installation is straightforward when you reuse the engine's original mounting hardware: position the cover over the pushrod opening, align the mounting holes, and secure using the existing screws while avoiding overtightening to prevent thread damage.

In tuning and upkeep workflows the pushrod cover does not alter engine timing or performance directly, but it helps keep the pushrod area clean and stable during inspection, needle adjustments, and other fine tuning tasks, reducing the chance of foreign debris affecting small-scale engine components.