The Singer Featherweight Manual for model 221, 222 sewing machines, are a great tool to have on hand. This is a reprint of the original manual which was very small, hard to read and probably disintegrating from age. This manual will cover everyday uses like threading, oiling and a description of the original accessories.
Another good resource is the Singer Service Manual which takes things to a deeper level. It's also available for purchase on our online shop for $9.95