Can you take a photo of the door open, it looks like a spring clip to hold the cassette tight. It might just slide into a couple plastic grooves. I don't have that model and I checked a few of mine.
I checked several WM-f5 yesterday. Cannot find this part . Can you please post a closer picture of the part alone? There is a part longer than this one that attaches the door hinge but this one is shorter than the one attaches door hinge I even opened a WM-F5 and took the component out of its shell and couldn't figure out where this part might come from I hope somebody else might have some clue
I thought door clip or sometimes they inbed metal into the plastic to hold parts of the front cover on.
