Question about Singer 57815 Mechanical Sewing Machine
If you are getting lots of thread underneath, then the top tension is at fault, the thread is not being controlled by the top tension device. So check the tension is set to 5, and that the thread is fully into the tension discs. You need to clean the tension discs every so often too, just turn dial down to zero and rub a clean piece of fabric edge between the discs to remove any dust, or dye particles that lodge there.
Then rethread up the top and check that the top thread is in tension this time, if you lower the pressure foot the tension discs should operate so when you pull the top thread just before the needle it should feel firm/resistance.
If you still aren't getting top tension after this, then the device/spring may have broken and will need a service to fix.
Posted on May 01, 2011
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Posted on Jan 02, 2017
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