Singer Featherweight 221 Service Manual. This is a photocopy (8 X 11-1/2). It contains information to repair some of the in-depth problems that come up on your Featherweight. A few of the simple maintenance items are also included. There are 3 electrical diagrams and 4 motor diagrams. Numerous pictures explain the inside of the machine. Due to the size of this item, it will be shipped separately by First Class Mail. If you wish to have it sent by Priority Mail, please email to make arrangements for additional shipping cost.