My janome is new, but it will not sew. I pass it through all of the necassary slots, but the thread keep knotting up.
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The "knotting up" can reveal a lot. If you have loose threads on one side or the other, the tension on the opposite side will be the culprit.
So if the threads are on the underside as you sew, it is the top tension. Top tension ought to be between 4 & 6 (this variation to allow for the different weights of fabric in your projects).
If tensions appear correct, and the thread is definately in the channel between the discs, try raising presser foot, remove thread and with a strip piece of fabric 8 - 10" (20 - 25cm) gently insert the fabric strip and clean between the discs with a see saw / to and fro action.
It may be there is lint trapped between the discs, this will keep them slightly apart and reduce the actual tension, sometimes dramatically.
If the loose threads are on the top, it is bobbin tension that is loose, it too may have lint in the spring and be giving a "false" tension.
I would not recommend fiddling with bobbin tension without being shown, it may end up with missing small screws and spring pieces.
Hope this is of some help,
Bargainbox
Posted on Jan 20, 2008
Hi,
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I have just bought a JMB sewing machine just for odd jobs, but no matter how hard I try it wont stitch and appears to stitch in the same place anf the tread knots. I have re tread I don't know how many times and changed the tension but still the same sometimes the top tread snaps..help!!
the thread underneat keeps making knots when i sew
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