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Ok, rule of thumb, if it loops on top, the problem is the bobbin, if it's looping under, the problem is the top thread.
take the bobbin out with the case. There should be only enough tension so that if you hold onto the tail of the thread it doesn't unravel. If you tug is should still come out.
The looping at the bottom is loose upper tension, or too much at the bottom. Usually when this happens to me, I've mis-threaded and missed a tension plate. Most machine tensions are somwhere between 2 and 4, but I don't know your machine personally.
So check that you havent tightened the bobbin so much it's hard to pull thread out. Just enough to support the weight of the bobbin case. And re-thread the top. That *should* fix the problem.
take the bobbin out with the case. There should be only enough tension so that if you hold onto the tail of the thread it doesn't unravel. If you tug is should still come out.
The looping at the bottom is loose upper tension, or too much at the bottom. Usually when this happens to me, I've mis-threaded and missed a tension plate. Most machine tensions are somwhere between 2 and 4, but I don't know your machine personally.
So check that you havent tightened the bobbin so much it's hard to pull thread out. Just enough to support the weight of the bobbin case. And re-thread the top. That *should* fix the problem.