Question about Kenmore Sewing Machines

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Hi! i was just gifted w/ a kenmore sewing machine model # 12121 i havent even plugged it in yet. I noticed that the top thread tension control knob has fallen off. it appears to have all its pieces, but i dont know how to get it to stay put. its very loose. can you help me?

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Open the left end door that accesses the light. On the edge of the casting by the tension control, you'll see a set screw tapped into the hole that the upper tension control fits into. That set screw locks the tension unit into the casing. If the upper tension unit is in peices, you'll need a diagram to re-assemble it correctly. If you don't assemble it correctly, it will NOT work right.

Posted on Dec 23, 2012

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Posted on Jan 02, 2017

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SOURCE: thread caught in hook race

There should be a small screw on the side of your bobbin case adjust it little by little until you get the correct tension.

Posted on Jun 15, 2009

kent581
  • 87 Answers

SOURCE: White 1620 will not maintain thread tension

Sounds like it could be thread, try this: Thread test
Test your thread quality to start, thread your machine and LIFT the presser foot (this opens the tension disks). Pull your top thread straight back. If you feel no tension no matter how much thread you pull, your thread is good. If that your machine passes that test, we can go to step 2. If not, try different spool of thread, do the same test until you get a smooth pull (tip: always check your thread this way when you thread your machine)
Step 2:
Pull on your threaded bobbin thread while it’s in the machine. Does it pull smooth and even? If so, go to step 3. If not, try a new bobbin (bobbins get bent or distorted if wound too tight).
Clean thoroughly in the hook and bobbin case area and oil 1-2 drop is all.

Posted on Mar 20, 2009

  • 1 Answer

SOURCE: Machine tension knob does not work.

Use a better quality thread. Sometime old or cheap thread never works right. Check to make sure you have the right needle for your fabric.

Posted on Jan 11, 2008

  • 6 Answers

SOURCE: Thread gets stuck around a knob on Necchi 536 FB sewing machine

I'm guessing you would have loosened the tension? Is there grit or something sticky (dirty oil) stuck between the tension discs?

Posted on Aug 26, 2009

Testimonial: "Very helpful suggestions. Cleaned around the upper tension regulator and adjusted top and bobbin tension today. So far, so good. Thanks. "

  • 76 Answers

SOURCE: Kenmore Sewing Machine Drop-in Bobbin Tension Adjusting Problems

looped stitches are usually caused by improper tension. when the loop is on the upper side, it may be corrected by loosening the top tension or by tightening the lower tension (turn the tension screws on the bobbin a hair at a time)

since using the machine only a few times it is best to clean the machine from dust (can use a can of air) blow air into the bobbin area and between the tension disks and under the throat plate.

make sure the machine is threaded correctly and bobbin is evenly threaded

Posted on Aug 28, 2009

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I have a Kenmore sewing machine - 12 stitch model which I bought in the 70's. I am having a tension problem and can't seem to fix it. What is the normal setting for the top, and bottom?


Hello

Load your Kenmore sewing machine with the right thread and bobbin thread for your project. If you use the wrong weight thread for your fabric or severely uneven weights of thread, this can cause the appearance of a tension problem when it is, in fact, a thread weight problem or a problem with your sewing speed. If you go too fast, you will break the thread. If you go too slow, you can cause loops. Uneven pressure can cause stitches to vary greatly.

Test your Kenmore sewing machine's tension by sewing on a piece of scrap fabric. If your tension is way off, then test on some basic cotton or a firm blend simply to get your tension right. Do not try to start adjusting your tension on silk or leather. Get a base adjustment on a more standard fabric first.

Look at the top threads and bottoms threads. If the tension is off on one side, it will usually affect the other side slightly. So select the side that looks more maladjusted to start adjusting the tension.

If the top thread is too loose or too tight, you will need to adjust the tension dial. This dial is usually located a few inches above the needle on the Kenmore machine body. Usually, your machine will have markings to indicate which direction tightens the tension. If these have worn off over the years, watch the dial as you turn it. If it appears to move toward the machine body, then it is tightening.

If the bottom thread is too loose or too tight, then you will need to open the door to the bobbin case. On some Kenmore models, there is a little screw near the bobbin case that can be adjusted slightly to adjust the tension. On other Kenmore models, there is a screw on the bobbin case itself--not on the bobbin, but on the bobbin's casing. This will also adjust the bottom thread tension. Adjust the bobbin thread tension to make slight changes.

If the thread is looping severely on one side, the thread weights might be off. For instance, look to see if you have a lightweight thread on the bobbin and a heavyweight one on the top. If the thread keeps breaking, the top tension or bottom tension could be too tight or the thread is too lightweight for the material you have selected. Check your combination of threads and material. Also make sure you are using the right weight needle and the right foot for the sewing step or project you are working on.

If your Kenmore sewing machine's tension is off severely or if you have not used your Kenmore in a long time, then you might need to take your machine in to be serviced. Sometimes, the inner parts need to be oiled or the entire machine might need to be cleaned and calibrated by a professional. If you sew a great deal or if your machine sits idle a lot, both situations will usually require some servicing to keep your Kenmore sewing machine and its tension in perfect working condition.

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1 Answer

Kenmore Sewing Machine Drop-in Bobbin Tension Adjusting Problems


looped stitches are usually caused by improper tension. when the loop is on the upper side, it may be corrected by loosening the top tension or by tightening the lower tension (turn the tension screws on the bobbin a hair at a time)

since using the machine only a few times it is best to clean the machine from dust (can use a can of air) blow air into the bobbin area and between the tension disks and under the throat plate.

make sure the machine is threaded correctly and bobbin is evenly threaded

Aug 26, 2009 | Kenmore Sewing Machines

1 Answer

Hi, my sewing machine is making a ball of thread under the material we'resewing i was told i might need to adjust the tension i don't have the manual booklet.


Try adjusting the numbered knob on your machine...this is your tension control. If you have knots on the underside of your fabric you want to turn this knob to a higher number until the knots dissapear.

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Try to always remember to thread the machine with the presser foot up, this way the thread will surley pass through the tension disks.

I hope I understand this right... what stopper and what knob in case I got it wrong.

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Beginning with the spool, guide the thread through the thread guides to the tension assembly. Pull the thread through the tension assembly and test it to make sure the tension is working correctly.
(To do this test,adjust your tension setting to normal or medium or 5 or something in the middle. Raise the presser foot and pull the thread through the tension. It should pull easily!! Lower the presser foot and pull the thread. It should pull noticeably harder.) If it passes this test, continue up through the take up lever,then down through the thread guides to the needle. Make sure your needle is fully inserted and turned the correct way.( If you load your bobbin case from the left side,the needle rule is normally FLAT to the RIGHT is RIGHT. There are some exceptions. If you have a newer style drop in bobbin or your bobbin case loads in the front then the rule is FLAT to the BACK.

To wind the bobbin, guide the thread around the thread guide on
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Sewman7

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Your local Husky dealer or via their head office in your country ought to be helpful unless they are out of print.........if so, ......Try sewusa.com or sew4less.com

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