A bottom cover to suit the UMS 9-115cc — the nine-cylinder 115cc four-stroke radial from UMS.
On this engine the component is the bottom cover, which closes the underside of the crankcase.
Why this part matters: the lowest point of the engine, so it collects oil and is the first thing damaged in a wheels-up landing.
Fitting note: Check for cracks around the screw holes and fit a new gasket.
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