Question about Singer 7462 Mechanical Sewing Machine

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I am sewing on demim. The thread is inches loose on the back side... it is terrible. Not really sewn at all. I have changed the tension on top several ways but it does not seem to make a difference. I have cleaned the bobbin thread area to no avail. Can't find my book. I have a model 2210 singer.

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  • grandma0_0 Sep 18, 2008

    I don't know which screw to tighten or loosen. It seems that there are ones for the presser foot, and one that holds down a black guard beside the bobbin case and that is all that I see.

  • grandma0_0 Sep 18, 2008

    I still have loops you could jump thru on the back side. I loosed the screw, tightened it, I have tried every number on the needle tension. Tried different sizes of needles. I don't know what to do. It sews fine on simple thin material.

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The manual can be downloaded for free from Singer's web site...
Are you seeing loops of the upper thread on the bottom side? If so, then the bobbin tension is too tight, or the upper tension is too loose. The threaded shaft on the upper tension might have stripped, leaving you with no adjustability.

Posted on Oct 06, 2009

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2 Answers

I am stitching a seam and when I finish it the thread is loose and it is like sewing a ruffle


increase the needle thread tension a bit
when approaching the end of a seam sew to the edge then engage reverse direction , sew back over the sewn bit for about 1/2" inch then forward sew again and cut the cotton when off the edge

Oct 23, 2016 | Sewing Machines

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I can't get the tension right. The stitches on the top side are too loose and the thread just pulls out.


loosen the needle thread tension of a bit
sew on a scrap bit of material until you get the tensions right
correct tension is when the bottom thread and the top thread meet at the join of the two pieces being sewn
you will only need to sew 1" to see how it is going

Nov 22, 2015 | Sewing Machines

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My sewing machine needle (very new one) keeps jamming every couple of turns of the needle - and the thread is very loose and loopy on the fabric. It makes a jarring noise


not quite sure how needle is jamming. I have had them break, had thread ball up underneath and caused needle to jam. Question is the needle in the right way, ie the flat side in as per manual, generally the flat side faces away from you. Sounds like your tension is not quite right if the thread is looping. Loops on bottom, bobbin tension, on top sewing machine tension

Dec 08, 2014 | Sewing Machines

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What to do if sewing machine is puckering?


Depends on why the seam is puckering. Read this: http://www.amefird.com/wp-content/uploads/2010/01/Minimizing-Seam-Puckering-2-5-10.pdf
Offhand, it sounds like you need to reset the top tension properly.
http://quilting.about.com/od/piecingtechniques/a/How-to-Adjust-Sewing-Machine-Tension.htm
The top two photos here are the upper and underside of a single ply of muslin sewn with a balanced tension. The blue thread is on top, red in the bobbin: http://www.picturetrail.com/sfx/album/view/22521551 -- that will give you something to shoot for.

Jun 12, 2014 | Kenmore 19233 Computerized Sewing Machine

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How to correct tension on sewing machine


are the thread with loops?
are the threads bird nesting?
try changing the needle
Correct needle insertion is mandatory for proper use of your sewing machine.
Raise the needle bar to the highest point, then loosen the needle clamp screw to remove the old needle.
Place the new needle in the needle clamp with the flat side of the needle facing the back, (round needle, the groove in the needle should face away from the shaft).
Push the needle all the way up as far as it will go. Then tighten the needle clamp screw.

rethread the machine top & bottom

Jun 07, 2012 | Brother LS-2125 Mechanical Sewing Machine

1 Answer

The stitch on the bottom of the material is very loose and is bunching and looks terrible, the top thread keeps skipping and breaking, Ive fiddled with the tension and still having problems


Let me give you a general lesson on adjusting tension that will work for any machine. I suggest you thread the top of the machine with a different color thread than the bottom so that it's easier to see what adjustments you need to make.

Thread your machine with the presser foot UP. The disks that control the tension (threadgoes through them) are tightened up if the foot is down. Change the machine tension with the presser foot DOWN.Because the disks won't be engaged (see above) if the foot is up, the diskswon't move. Start at the middle setting, 3. Go up to tighten, decrease toloosen. Each machine is different, even 2 different machines of the same model.The best thing to do is start at 3 and use a different color in the top andbobbin thread so you can easily see what changes to the tension do to yourstitches. Now use a straight stitch a sew 3 or so inches. Take a lookat the top and bottom of the fabric. You don't want to see any (or at least notmuch) of the other color showing from the other side. Loops on the bottom of the fabric means you need to tighten(increase) your top tension. If you're stitches on the bottom are causingpuckering, then you need to loosen you're top tension. For the most part, youreally don't want to touch your bobbin tension-leave that to a repairtechnician. The factory setting shouldn't be touched except by someone whoreally knows what they're doing. Keep sewing a few inches at a time until you have the resultsyou want. Now you're tension is where you need it!

May 22, 2011 | Brother XL-5130 Mechanical Sewing Machine

1 Answer

The thread underneath when sewing is too loosed


Usually thread too loose on the bottom is caused by the upper tension being too loose. The top and bottom tensions work together with the top thread making the underside of the stitch seem too taunt or too loose and the bobbin thread causing the top side of the stitch to be loopy or too tight. Select a large zig zag stick and sew a couple of inches. Then examine the stitch. It should look identical on both sides. Look to see which side is drawn too tight, the zig zag being smaller on that side with threads from the bottom threads pulled through. Then adjust the two tensions so that they make a uniform, identical stitch.

Also, when the bobbin tension is right you can hold the bobbin dangling by the thread and it won't spool out to the floor but will let loose a bit with a slight flick of the wrist. Too loose it will just spool out. Too tight and it won't drop at all. When you get that set right then do the above zig zag test to see where the top tension should be set.

Mar 02, 2011 | Sewing Machines

1 Answer

Stitches are looping on the underneath and missing some stitches


Refer to the manual for cleaning.

Replace the needle with the size recommended for the type of fabric being sewn. The flat side of the needle is usually facing the back of the machine - check manual to be sure.

Always thread any sewing machine with the presser foot up. This opens the tension control so the thread can properly enter this device.

When a sewing machine is threaded with the foot down, the tension control closes and the thread cannot enter as it should

You then get loose stitches because the top thread and bobbin thread cannot make a proper stitch and the tension of the bobbin thread is pulling the top thread to the underside of the fabric.


Mar 07, 2010 | Janome Sewing Machines

1 Answer

Sears Kenmore Sewing machine model 15358 Just got this machine brand new yesterday. I've gone through the manual very carefully to make sure the machine is threaded properly. It's very similiar to my old...


The tensions must match ie. top tension =bottom tension. If the material is not sewn together tightly, that means the tensions are mismatched. Sewing machines will sew whenever the top and bottom tensions are equal (be it very tight or very loose).

We usually advise the customer to not touch the bobbin case tension. When that is not changed, all tension adjustments can be made from the top tension above the needle.

It appears that one of the two tensions (top or bottom) is much tighter then the other. I would reset the tensions to how they came, if you are unfamiliar with sewing machines this may take a little bit of experimenting until you get it back to a standard quality stitch.

The other option would be bring it to a sewing tech. A good mechanic should be able to adjust the machine and your tensions to your fabric (and recommend needle size for your thread/materials) in about an hour.

Apr 15, 2009 | Kenmore 15358

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