And, yes, there are fuses which, mysteriously, cover different parts of both seats. Reclining to full would very well have put a greater strain on the motor and blown a fuse. You also may have had an underrated fuse in there. Check them all to the diagram to make sure the correct ones are where they should be. On mine, a fuse always blows when the driver's side front seat height is adjusted. Definitely blows the fuse every time it is touched -- so I don't touch it. I have become adept at adjusting the seat without that part moving. Took me a long time to figure it out. When this fuse goes ("E" I think), several other things do not work: driver's side front height adjust, both headrests, passenger seat back and height adjust (both front and rear), and steering wheel telescope.
1986 300E Anthracite + ECodes + MB Mileage Award