Question about Bernina Sewing Machines
I opened the machine several times to keep it clean but every time I fixed the thread tensioner and make the machine complete. just a bit later it doesn’t work again!
You need to specify the model. Different tensioners for different models.
Posted on Apr 15, 2012
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Posted on Jan 02, 2017
its common, but easy to fix,,,ok......first things first, 1. bobbin in bobbin case correctly 2. machine threaded correctly 3. tension set around 3-4 upper 4. when was the last time machine was serviced
Posted on Jan 21, 2008
the top seam is actually the bobbin thread. dots on the underside means that the top tension is too tight. you may have a piece of thread or something gummy caught between the upper tension disks.
Posted on Jun 11, 2009
it sounds like your bobbin tension is too tight. to adjust bobbin tension, remove bobbin case (remove needle plate first) and adjust bobbin tension screw on side of case until bobbin thread has a slight resistance as you pull it through the bobbin case.
this will be trial and error until you get best result. you should always try and match top and bottom threads. if the top thread is quite thick you may have continue to increase needle thread tension until balanced.
Posted on Jul 26, 2009
there is a screw on the side of the bobbin case, which needs to be turned to the left or counter clockwise to loosen the tension and also change the needle because a burr on the end will cause problems with bobbin thread
Posted on Dec 13, 2009
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