Question about Kenmore Drop-In Bobbin 505S-21BH Mechanical Sewing Machine

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Thread jams in bobbin area

Last week, my son tried to sew material that was too thick. He jammed my machine (Kenmore 385.15243/15343) and the needle broke. I replaced the needle and cleared everything out. The feed dog was lowered and I fit that back into place. Now, when I try to sew, it works for about an inch then jams. The entire bobbin area is filled with thread and then the shuttle hook quits moving and the needle hits it. Everything stops. Can anyone tell me what else I can do to clear this up?
thanks

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  • Anonymous Mar 14, 2014

    I was sewing through yow thicknesses of duck fabric with a denim needle when the needle broke. I inserted a new needle but it cannot move to it's lower positions because it hits metal - with or without the bobbin case in place. Is there anything I can try or is this something that only a technician can address? Thanks for your input.

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Well i have done the same thing , all u need to do is if you see the screws that hold the bobbin area you un screwq thoes and get you a pair of scisors and cut around the knoted mess and all you do is work with it until it is all out and you dont realy want to pull on it to much you know just work it around so it gets lose so that you can cut it out thin you put it back together and try it out.

Posted on Nov 25, 2008

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The noise is because the machine is trying to raise or lower a needle and can't move. Several things to check. Did the needle break and jam in the bottom thread? Is the needle bent or jam? Did the thread jam in the bobbin area? I had a 'knot' of thread build up on the bottom and it hooked itself into the metal clip on the bobbin so that the needle couldn't raise. If thread jams in the bottom carefully cut the threads until you can free the hoop and material. Then check to make sure all pieces of thread and fuzz has been removed in the bobbin case. If it happens again check to see if the bobbin case or the throat plate is scratched or bent. If you are stitching Free Standing Lace on this machine or a piece with over 20,000 stitches I recommend starting with a new full bobbin and a new needle. As you get toward the bottom of the bobbin, thread seems to have a high likelihood of tangling or looping.

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make sure the thread has not come off the thread take up lever
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Out of nowhere, after working fine for weeks, the bobbin thread started breaking, and then stopped "wrapping" properly around the outside of the bobbin while I sewed. It keeps jamming to where I...


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Clean bobbin area for lint or loose threads
Rethread machine top thread make sure to get every thread guide
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Check tension 3 or 4 is usually good

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on some sewing machines when the thread comes off the thread take up lever it can cause the machine to jam
also if the bobbin thread becomes tangled it can jam
check the bobbin area for lint or loose threads
try having a top thread tail & bobbin thread tail of 3-4 inches
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kyoungblood4
Are you making sure that your pressure foot is up when you thread the upper thread? If it isn't then your thread is not seating correctly in the tension disks. It will then be loose and make a birds nest(mess) under what you are trying to sew. The other thing to check is which way you are putting the bobbin into the bobbin case, different machines do it different ways. Some want the thread to come out of the case in the same direction as the slot on the case and some want it to come off in the opposite direction.

Guest,
Probably when your son broke the needle he knocked it out of time. You will need to have a sewing machine technician to repair that.

Hope this has been helpful for you bothl Liz M

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2 Answers

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