Sorry, should have done that first. Here's the front view; you can see the little gap under the dust bin. I guess some piece sheared off so cleanly that I can't tell which part it came from? I looked through various images and schematics and don't see which piece would have had such a clip to begin with. I assume this is a common issue, with all function relying on all of several little plastic catches throughout the machine... somewhere, I'm sure, my grandmother's electrolux is still being used as a leaf blower.