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try adjusting the top tension to 3 & if it doesn't stop the looping, try 4 but I wouldn't go any higher than 5,, if changing the top tension doesn't help then I suggest taking the machine in to have it serviced. the bottom tension is more difficult to do,, it's also very possible that the top tension dial is messed up & needs replacing. only a sewing machine shop can tell for sure.
try changing the needle-flat side goes to the back of the machine check to see if the thread has come off the thread take up lever try rethreading the machine top thread & bobbin clean under the needle plate area & also in the bobbin area for lint or loose threads
To correct loose stitches, try the following: (1) Balance the thread tension. If the stitches are loose on top of the fabric, decrease the tension to the next lower number. If they are loose on the underside set the tension to the next higher number. (2) Make sure the needle/upper thread follows the threading path. (3) Check to see that the bobbin case is threaded properly. (4) Use a different size needle. For fine fabrics, use a smaller needle (size 9, 11); medium-weight fabrics require a size 14 or 16. And use a size 18 or "Denim" needle for heavy corduroy or denim.
Hi! This may sound silly, but if you changed your needle and put it in backwards (which is easy to do), the top thread won't pick up the bottom thread. Take your needle out and check the flat side of the needle shank--which way is it facing? With a lot of the newer machines, the flat side goes to the back, but check your manual to make sure.
I would first make sure the thread tension is adjusted properly. if this does not fix your issue, check the point on the shuttle hook and make sure it is not broken off. it should come to a needle sharp point. if the tip is broken off it may not pick up the thread from the needle properly. then double check the timing and the needle shaft depth. first, make sure your needle is fully seated and tightened down. the groove in the needle should face forward. there are two timing marks on the needle shaft. at maximum depth you should see both lines and the top line should be right at the bottom of the needle shaft bushing. then as the shaft goes back up, when the bottom line is at the bottom of the bushing the point of the shuttle hook should be right behind the needle and centered in the indentation on the back of the needle. you may need to make minor adjustments on the needle shaft depth depending on what brand and type of needles you are using.
My sewing machine is a Brother LS1217, well actually it is my son's, and he uses it very seldom. I went over to put in a new needle and I cleaned it top and bottom, put in a new bobbin, and a new needle and the needle won't pick up the bottom thread. What am I doing wrong? Please help me!! It has to be something simple, as this is such a simple machine! email@example.com