You can download the manual here:
http://www.singerco.com/accessories/manuals.html
This book referenced above, Nancy Johnson-Sebro's book Featherweight 221 The perfect portable, is a great book to have. I was doing something as simple as cleaning out the lint under the needle plate and couldn't get it working again. Luckily, I had the book and got it fixed in no time. It's worth every penny! Check Amazon, I think I paid under $20 for the book.