Tried to make a link, but I'm no good with that on the iPad. If you google
www.singersewinginfo.uk.co/featherweight you will get a ton of info on your machine. I'm guessing it's a black machine, probably made in the US before 1953, but I could be wrong.
Does it sew properly? I've found that the most likely thing to go wrong is getting thread wrapped around the bobbin case or even behind it. So, always hold your top and bottom thread tails tightly when you take the first stitch. You can avoid a lot of frustration. Ask me how I know!