FSa-72 Sealing Cover Plate for RC Engines OS44307000 by O.S. Engine  [OS44307000]

Precision Cover for FSa-72 Crankcase

Catalogued under O.S. Engine OS44307000, this cover plate is made for components carrying the FSa-72 designation. It covers the crank case area and provides the sealing surface and mounting points needed on the engine assembly.

Installation notes: the plate registers on the crank case dowel pins and fixes with the original screw locations, so use the engine’s stock hardware when feasible. Confirm clearance to the carburettor and the cooling head while assembling the FSa-72 layout.

Tuning impact: a correctly fitted cover plate preserves crankcase sealing, which can influence engine starting behavior and idle quality on RC models. Check for flatness, secure fastener torque, and that gasket surfaces are clean before running the engine.