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Signs of A Bad Bobbin Case?

2K views 2 replies 2 participants last post by  Coodeville 
#1 ·
I've been searching eBay for Singer 111W and have found that a lot of people offer bobbin cases for this machine.

So what kind of problems can develop indicating replacement is needed for this part?
 
#2 ·
About the only things would be the tension spring breaks, the threaded holes for the tension screws get stripped, you get a jam up bad enough to damage the case, or the spring loaded piece that holds the bobbin down breaks.
 
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