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I can not see how to open the top to see if I have a loose connection.

It looks like there are little screws but I can not get the top loose and the screws are hard to get to

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  • Sewing Machines Expert
  • 455 Answers

Please take the machine in to a authorized repair shop and let them take a look for you. More than likely you don't have the tools to disassemble the case, or and repair the problem, so let a professional make the repairs so it's a safe machine to operate.

Cheers,
Kelly
San Diego, CA
Embroidery Services

Posted on Nov 30, 2014

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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

2 Answers

Top zigzag is fine, bottom is loose


sounds as if it has insufficient top tension, clean between discs then re thread with presser foot down

Feb 17, 2014 | Singer 4423 Sewing Machine

1 Answer

Bobbin tension too loose


You don't give us the make and model of your machine.... so it's hard to give you decent specific advice. Secondly your question isn't making sense. If you are getting loops on the bottom your top tension isn't right(too loose) if your loops are on top your top tension isn't right.(too tight) The only time you would mess with bobbin tension is when you change thread weights significantly. Like from 40 weight to 92 weight or visa versa.



Look at your bobbin case, bobbin carrier, shuttle/carrier..... there is a spring (it's a flat piece of metal) on the spring is a small screw. Use a small screw driver and tighten the spring 1/4 turn. Loosen your top tension a couple turns. (remember right to tight, left to loose)

Mar 19, 2013 | Sewing Machines

1 Answer

Bobbin tension is too loose


Ok, go a head and set your top tension to "normal" Then take out your bobbin case and get our your tiny screw driver. Find the small screw that holds the tension spring on the case..

First carefully examine the spring (look for lint jammed under it, etc.) Then turn the screw clock wise a little bit..(perhaps a quarter turn) reset your bobbin and put back in the machine. Sew a test strip. If your stitch is better, tweek the bobbin screw a bit more. Use caution though you don't want to reef down too much and break the screw.

Aug 02, 2012 | Singer 7256 Sewing Machine

2 Answers

Bottom tension is too loose


You really need a proper set of weights and test spindle to adjust the bobbin tension, however if the bobbin tension is genuinely too loose, you can adjust it by turning the tension screw clockwise - this is the larger of the two screws on the side that are attached to the spring under-which the thread goes when it comes off the bobbin. You only need to turn the screw a little bit to make a big difference to tension, so dont overdo it.

Jan 27, 2012 | Bernina Artista 180

1 Answer

The hand wheel is very stiff and the foot control cannot electrically move the needle up and down either...just humms. The machine looks like it has had very little use. From the 70's and I just...


The top cover just pops open which is why there are no screws. Just push up from the front side and it should open. On older machines, this may take a little bit of force. :)

Aug 26, 2011 | Kenmore Sewing Machines

1 Answer

The underneath stitches are loose


When you see loose stitches underneath your sewing, it usually means that the top tension needs tightening. Write down where your tension disk is before you turn to a higher value, then sew. Keep doing the above until you reach the correct top tension. The reverse of this would be loose stitches on top which means the bobbin needs to have the tension screw increased, little at a time, about 1/8 ". Sew and repeat until the stitches are equal.

Sep 05, 2010 | Sewing Machines

1 Answer

The top stitch on my machine doesn't seem like it is correct. It seems like it isn't going deep enough into the fabric and hooking well w/ the bottom thread. It almost looks like one long stitch all the...


Hi. I think I know what you mean--the top thread looks like it's just laying across the fabric, right? This is because either the top tension is too tight or the bobbin tension is too loose. (Either condition will look the same.) Try it with a different color thread in the bobbin, you can easily see the bobbin thread cross the top thread on top of your fabric. Here's what to do:
  1. since you should hardly ever need to adjust the bobbin thread, we'll start with the top thread.
  2. Make sure you thread the machine with the pressure foot UP (opens the tension disks) but adjust the tension with the pressure foot DOWN (closes them so they will adjust). Use a size 12 or 14 needle and good-quality thread (it does make a huge difference!)
  3. With different color thread on top and in the bobbin, stitch an inch or so and check the stitch.
  4. Slightly loosen the top tension (move the dial so the numbers go lower). Don't move it a lot, just a little bit.
  5. Stitch again and check. Repeat this process, stitching, checking, and gradually adjusting the tension dial until you don't see any of the bobbin thread on the top (or very, very little) and don't see any of the top thread on the underside (or very, very little).
  6. IF this doesn't get the balance adjusted, then you'll have to play with the bobbin tension. (But generally, once this is set, you shouldn't have to mess with it again.)
  7. There is a tiny screw on the bobbin carrier that tightens or loosens a very small metal strip (where the thread exits the carrier). To tighten the bobbin tension, screw this just a tiny bit to the right. (Turn it to the right to loosen the screw, to the left to tighten it.) Again, just make a small adjustment each time and recheck your stitches.
Few things about sewing are more frustrating than stitches that aren't balanced!

Sure hope this helps!


Robbie

Apr 22, 2010 | Brother XR7700

1 Answer

Pfaff varimatic 6091 sew a rag quilt with jean and flannel,I can't get my tension right it seems to be funny on the bottom stitch,where shoulf the top tension be set at 4 1/2 ,when do I adjust the bobbin...


Hi! The bobbin tension rarely needs to be adjusted. First, make sure you're using the appropriate size needle and thread for your fabric (I'd probably use either a 'denim' needle or a universal size 14) and also that the upper thread and bobbin are threaded absolutely correctly. These can throw off the tension! Also, take the time to clean out the bobbin area. That can throw your stitch off also.

If the stitch on the bottom is loose, so that you see the top threads, then the top tension is too loose. If the top stitch is too loose and you see the bobbin threads on top, then the top tension is too tight.

It helps to thread the machine with different color thread on top and in the bobbin, and then stitch an inch or so on the same type of fabric as you're using in your quilt. Check the stitch. If you need to adjust the top tension, make sure the pressure foot is down! Adjust a little, stitch a few inches, and check again. Repeat until you don't see any (or very little) bobbin thread on the top or top thread on the bottom.

If you go through all these steps, and the bobbin thread is still loose (and you've tightened up the top tension), then there is a tiny little screw on the side of the bobbin case that you can use to adjust the bobbin tension. Turn the screw just a little bit (less than a quarter turn), stitch, check, etc. Once the bobbin tension is set, you shouldn't ever have to change it.

Let me know if this helps, ok?

Happy sewing!




Feb 10, 2010 | PfaFF Sewing Machines

1 Answer

The shaft piece on my hobbylock 786 serger is loose


The top hex screw I think holds the bushing that allows it to slide freely. Keep that loose. If you open the panel where the lightbulb lives and spin the wheel, you will see a small flathead screw come into sight near the top of the rotation, through a small round window in the case. Tightening this screw a bit should keep the needleshaft moving with the wheel. Unfortunately I am still trying to find out how to position it so that it's properly timed.

Jan 20, 2010 | PfaFF Sewing Machines

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