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Old 02-26-2015, 05:04 PM
  #2  
SteveH
Banned
 
Join Date: Oct 2012
Location: San Lorenzo, CA
Posts: 5,361
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welcome from the SF Bay area!

Do you have a copy of the manual? If not they are available online free
http://www.singerco.com/uploads/download/646_221.pdf

Most likely reasons are needle in wrong way, threading process missing a part, or lint buildup
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