This is the manual for a 5050. Another website comment said that the 5050 and the 5050C were the same machine. I hope this will help you.
http://www.singerco.com/uploads/down..._5040_5050.pdf
The following is from the Singer website:
http://www.singerco.com/contact-us
For all other assistance, contact Consumer Affairs:
1-800-4-SINGER (1-800-474-6437)
Monday through Friday, 8:00 a.m. to 4:00 p.m. C.T.
Please note that our toll free Consumer Affairs line closes at 4pm. Any callers that call between 3:30pm and 3:59pm Central Time will be notified that we will be closing at that time. Any calls that remain in queue will automatically be disconnected at 4 PM. If you prefer you may contact us at
[email protected].
Singer Sewing CompanyŽ
1224 Heil Quaker Blvd.
P.O. Box 7017
LaVergne, TN 37086
Customer Service: 1-800-4-SINGER (1-800-474-6437)
Customer Service Fax: (615) 213-0994