Question about Singer 1120 Mechanical Sewing Machine

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Zigzag stitch not working on top side but working on bottom side on singer 1120

My singer 1120 will not sew a zigzag stitch properly. The top of the stitch has a zigzag but with an extra line of thread underneath it. The bottom of the stitch is working PERFECT. I have checked everything that I know to check, have cleaned and oiled the machine. I have tried numerous different length and width combos and set the tension on different numbers from 0-3. IF anyone has any ideas on what I need to I would appreciate it. Thanks!!

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6ya6ya
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Posted on Jan 02, 2017

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need needle threading instructions singer 3116 simple. pictures would help. thank you

Posted on Mar 15, 2009

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Zenqi
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SOURCE: singer machine needle won't do width in zigzag

It sounds like it needs lubrication on the needle bar frame and linkage.

Posted on Oct 01, 2009

  • 20 Answers

SOURCE: I have a Singer Sewing Machine 5817C, the thread

Make sure that there is tension on the thread when you have passed it through the tension unit, by making sure the presser foot is down, and then gently pulling the thread to feel tension. If there is no tension, as seems to be the case, check the tension discs inside the unit to make sure that there is no debris stopping them from closing.

Posted on Oct 14, 2009

SOURCE: Singer stylist 7258, will only pick up bobbin on one side when doing zigzag stitch

try using a washable stablizer or interfacing.
if that doesn't help then it's possible that a gear or cam may be worn enough to cause the machine zig zag not to work properly

Posted on Mar 27, 2012

  • 539 Answers

SOURCE: uneven stitching on the bottom

Try sewvacdoctor.com and refer to handy problem list. Click on it for answer. Hope this helps.

Posted on Apr 04, 2012

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2 Answers

Will not zigzag or decorative stitches. New to these newer plastic style machines Always used older steel machines. This was given to me my by my sister who used it very little. Could cam be broken?


Hmm, I'm wondering if it has been cleaned and oiled recently. Older mechanicals require frequent TLC. Consult your owner's manual for cleaning and maintenance instructions:

Is your sewing machine mechanical (ie, not computerized)??? CAUTION--if your machine is computerized, do NOT proceed with the following suggestions.

If it is mechanical, have you cleaned and oiled your machine recently? Most mechanical sewing machine failures are because they have not been adequately and routinely oiled, the old oil has solidified and frozen the mechanics. I recommend Bernina oil or liquid Tri-Flow Synthetic Lube (or similar good quality sewing machine oil) for mechanical machines--do NOT use 3-in-1, cooking oil, WD-40, or the sewing machine oil from your grandmother's sewing basket. (I am not associated with any Bernina dealer.)

If it is in fact frozen, pick up a bottle of liquid Tri-Flow Synthetic Oil at the hardware store. Oil one or two drops in every oil hole (see your manual) and also every place where metal rubs on metal. But DO NOT oil any plastic gears, rubber, or belts. If it is still stiff or frozen, direct a hot handheld hair dryer into the top and bottom mechanism of your machine. See if that loosens it up. You may have to repeat.

Once your machine is working again, place a drop or two of good sewing machine oil as directed above. Be sure to use a small brush to clean the lint and dirt out of your machine, especially around the feed dogs and bobbin area. (Caution: Compressed air will sometimes force the dirt and lint into areas that cannot be cleaned.) And continue to use good quality sewing machine oil to keep it running. Recommendation: every time you change a bobbin, after 8 hours of sewing, or every six months if it is not in regular use.

Dec 30, 2015 | Singer 6038 Mechanical Sewing Machine

1 Answer

Top stich perfict but bottom stich too loose on vivo singer machine 1004


Your bobbin tension needs adjusting, and although it is not hard to do and doesn't require that you take the machine apart, you MUST do it systematically. If you don't, you'll make things worse.

First, download the user's manual from the Singer site if you don't have one. On page 20, you'll see a discussion regarding tensions, and what improper tension looks like. Tension is a balance between the top and bobbin.

Then, using scrap fabric, set your top tension on Auto and make sure your needle is all the way up in the clamp. Run a line of straight stitches, and next to it, run a line of zigzag stitches, maybe four inches, and examine it. The illustration on that page will show you what your straight stitches SHOULD look like. If your zigzag stitches show one side that looks like "chicken tracks" but the other side looks like it should, the chicken tracks side is too tight. In your case, if the bobbin is too loose, the top will look like chicken tracks. It helps a lot to use two different thread colors, as well as a third for the fabric.

To adjust the bobbin tension, you will need a tiny straight blade screwdriver. If you have an indication that the bobbin side stitches are too loose, take the bobbin case out of the machine and locate two screws on the side. One is a Phillips--don't touch it. The one on the left of the Phillips is a straight-slot screw--that's the one you want. The saying is "lefty loosey, righty tighty." If your test indicates the bobbin tension is indeed too loose (which can happen over time), you need to tighten it by turning the screw 1/4 (ONLY) turn to the right (righty-tighty). Test again. You should see at least some improvement to indicate you're on the right track, and repeat--turning ONLY 1/4 turn--until your top and bottom tension are balanced. Don't forget to also test with a zigzag; I have adjusted bobbin tensions in the past that looked OK on the straight stitch, but the zigzag indicated I wasn't quite there yet.

Jun 25, 2014 | Singer 2638 Mechanical Sewing Machine

1 Answer

My singer 1120 will sew straight stitch but not zigzag


If the needle is moving side to side the chances are it is a blunt or bent needle, failing that it may need retiming , I cannot upload timing instructions on here contact me kendourof@yahoo.com and I will attach instructions

May 27, 2014 | Sewing Machines

1 Answer

Singer sewing machine needle moving to the side after it's in the fabric for a zigzag stitch


If you can grab the hand wheel and move it right and left, then it probably needs a plastic collar that goes next to the left upper shaft bushing.
If not then the cam timing needs to be adjusted.

Mar 13, 2014 | Kenmore 15516 Mechanical Sewing Machine

1 Answer

Not stitch zigzag


Have you tried a needle change? It could be blunt or the wrong size. Have you cleaned under the needle plate as the ridges get full of lint there. A toothpick will clean them out.

Nov 22, 2013 | Singer 1120 Mechanical Sewing Machine

1 Answer

Uneven stitching on the bottom


Try sewvacdoctor.com and refer to handy problem list. Click on it for answer. Hope this helps.

Apr 03, 2012 | Singer 1120 Mechanical Sewing Machine

1 Answer

Singer stylist 7258, will only pick up bobbin on one side when doing zigzag stitch


try using a washable stablizer or interfacing.
if that doesn't help then it's possible that a gear or cam may be worn enough to cause the machine zig zag not to work properly

Mar 27, 2012 | Singer 7258 Sewing Machine

1 Answer

I do a few stitches and upper thread snaps. I feel I am threading it incorrectly and it is too tight


sewusa.com has threading diagrams

singer.com has free manual for a singer 1120
just go to the singer website & put in the box 1120,,the 2 bottom ones are free

Nov 30, 2010 | Singer 1120 Mechanical Sewing Machine

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