Turns out you do have to be a member to be able to download the manuals. I've got Moderator status specifically so I can upload my entire manual collection. About half way through my "other than Singer" group, so it's going slowly. My DH is doing the scanning.
The owner of that site feels copies of non-copywrited manuals should be free - and I'm onboard with that. I like having the originals as part of my collection.