I honestly don't know how those oil screens really stay in place anyway. Seems it would be easy for them to fall off during a routine oil change and end up floating around inside the engine case. I removed the screen during my last oil change (after 50 miles on the Hawk) and drained the oil out of the bottom engine plug as well as the side bolt with the spring/screen behind it. The screen just rests on that spring so I could see it easily coming off during reinstall.
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