At this point I did not find any more fasteners to remove and sort of jockeyed the black brush and belt housing around by pulling it outward from one side.

I noticed that there was a "keyed" fit between the housing and the frame. By rotating the housing and holding the frame steady I was able to carefully but firmly free one side of the housing and pull it away from the frame. Once one side was removed, the other side could be easily taken out and the whole housing removed.

Unfortunately, I don't have a good photo of this process.