Top thread problem, Not enough tension on top=loops on the bottom of the fabric; too little tension on the bottom = loops on top of the fabric. Yes, I know it seems backwards. See:
http://www.picturetrail.com/sfx/album/view/22521551
Dollars to donut holes, you either threaded the top of the machine with the presser foot down (it has to be UP to let the thread into the top tension), or you're trying to sew with the presser foot still up (which is an issue common to people trying to sew bulky seams).
Take the thread off the top of the machine, take out the bobbin case and give the machine a cleaning, rethread the machine, fetch up the bobbin thread and hold the bobbin and top thread ends together under and behind the presser foot for the first 2-3 stitches of each seam.
The thread keeps on wrapping around the bobbin case and/or it
knots on the underside of the fabric and the machine jams
and stops and I have to cut the fabric free. I have tried everything
that the instruction booklet recommends but there is nothing specific
regarding this problem
Please email me with the timing instructions.
Thanks,
JoAnn
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