Question about Kenmore 15343

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Thread is clogging up under fabric and is not catching bobin thread

Can you tell me what to do? It seems to be catching the top thread and cutting it into small 2 inch pieces under the fabric and is not catching and using bobin. Also, how do I know when the bobin tension is correct?

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  • pokie312001 Nov 11, 2007

    I have a kenmore sewing machine model 158,and it was used with no maual. First off is there a sight where you can get a free, or minimal costing manual? Secondly,it runs fine,however the top stitching is producing way too much thread in each stitch,causing the thread to bunch up underneath when sewing. In turn,it gathers below by bobbin casing.Is there an easy fix to this?

  • EmilyFravel Aug 24, 2008

    I have a brand new Kenmore 15343 Sewing Machine. I don't think what I am doing wrong. I have the thread on the bobbin and the bobbin in the bobbin case. After that, I am confused about how to put it in the machine. What I have been doing so far has resulted in bunching under the fabric. Is this just a tension problem or am I doing something wrong? If it is tension (it is set on 5) how do I know which way to go?

  • elaine musser Sep 17, 2008

    the thread is bunching up under my material and the needle stops....and lockes up what is wrong? how do i fix this?



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I have the same problem, I fix it by removing both Shuttle hook and Bobbin Case and tested it to see if the shuttle hook rotated freely within bobbin case. I noticed the screw for the tension spring was too high and was rubbing agaist bobbin case. Just tighten screw on spring and and recheck for rubbing.

Posted on Jan 22, 2010


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Kenmore mini ultra The top thread breaks off from needle after a few stitches. The bobbin seems to Be catching the top thread. Thank you. ??

If the top thread sews a few inches and then breaks, something is catching the top thread and holding it until it breaks. Usually, this will happen when using the old style thread cones with the slit in the edge to keep the thread from raveling off the spool. To prevent the thread from hanging up, turn the thread spool over so the slit is at the top instead of the bottom. Sometimes top thread breaks will happen if the thread becomes looped around the thread spool pin.

Remove the thread, ALWAYS RAISE the presser foot and then rethread the upper thread. Verify that the thread path is correct and that the thread has not looped around a guide.

If the thread is fraying at the needle eye, the needle/thread are not compatible. Also, the tension may be too high.

Check that the upper tension disk is clean--no gunk buildup or thread pieces stuck.

If the thread is actually breaking when it penetrates the needle plate hole, there may be a burr or nick somewhere below that is catching the upper thread. You can wrap your finger with a piece of fine fabric, like an old pair of hosier, fine knit fabric, etc. and running your finger around in the bobbin area, under the needle plate. If you get snags, then you have a burr or nick. If it is small, you can sometimes smooth it with a fine emery board. If it is a large burr, you may need to purchase a replacement part.

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I would suggest replacing the needle, make sure the needle is correct for the fabric and thread being sewed.
sometimes when the fabric gets caught in the feed dog area, there are different reasons, I'll list some below
fabric is too thin--needs stabilizer
top thread has some off the thread take up lever
bobbin is turned the wrong way in the bobbin case
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when a needle is blunt it makes a popping sound when it goes thru the fabric
check the bobbin to see if it's warped-I have had some that were
check to see if there is lint or loose thread in the bobbin case area
rethread the machine to make sure the upper thread is not catching on anything
sometimes the thread can come off the thread take up lever
& sometimes it can get caught on the spool pin & also on the notch that's on the thread spool it's self---I've had this happen before
if you sew alot-good maintenance practice is to clean the bobbin case area at least once a week-if you don't sew alot-once a month & also under the needle plate
when cleaning under the needle plate-make sure you do not damage the top of the screws when you remove them to clean under the needle plate & because if the top of screws get damaged they can pull the fabric when the fabric goes over them
check also to make sure your top tension is correct

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If the top stitch is loose, then you need to tighten the bobbin tension: if the bottom stitch is loose, tighten the top tension. Hope this helps. It could also be the size needle and thread you are using for a particular fabric. Different fabrics require different notions.

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