Recently bought a 2001 yz 250 and during the engine tear down I noticed that this plug/screw was loose and siliconed into place. It’s got a small crush washer on it and I looked everywhere in my manual but couldn’t find anything on it. The threads are stripped out and it won’t tighten either. Is anybody familiar with this or have an idea of what it might be? It’s on the left side of the crankcase beside the generator cover.
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