Question about PfaFF Hobby 4260

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Bottom (bobbin thread) makes loops

The bottom bobbin thread makes loops and the manual says to adjust the bobbin tension, but does not show how to change the bobbin tension.
How often and where should you oil the machine
This is on a Pfaff 2034 sewing machine

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I don't have the same brand as yours, but on my machine there is a little screw on the bobbin case that you tighten to increase the bobbin tension. If you've got one, turn it 1/8 to 1/4 turn at a time.

Posted on Jan 24, 2009

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Bottom thread seems too tight!!! Help!!!


If the bottom thread is tight there should also be loops on top and this means that the upper tension is too tight.
Get out your manual (http://www.singerco.com/uploads/download/1198_8763-efs.pdf) and turn to page 24. Under "ADJUSTING TOP THREAD TENSION" it tells you that if you're having thread tension issues, change the tension control dial on the top of your machine from auto. It also shows you a diagram with your problem illustrated on the right side of the page. The bobbin tension is set at the factory, so all tension problems can be solved with top tension adjustment. Set it manually and if it loops on top, loosen the tension a little. Test again. Repeat until loops are gone.
Using different colours on top and bobbin and a contrasting fabric (e.g. black top, white bottom, light blue fabric) means you can easily see what's happening. A perfect stitch is when you see exactly the same stitch pattern on both sides of the fabric. On top, the bobbin thread colour appears between stitches as a tiny dot and on the bottom, you see the top thread dot between stitches.
If it's impossible to get the tension right, take it to a technician, because it's a sign that the hook timing needs attention.

Apr 21, 2015 | Singer 8763 Curvy

Tip

How to adjust the tension on your sewing machine


Few things are more frustrating than not being able to get the tension on your sewing machine balanced. Here are a few tips on how to do it:
1. Make it a habit to thread your machine with the pressure foot UP. This disengages the tension disks so the thread is able to slip easily between them.
2. Always adjust your machine's tension with the pressure foot DOWN. If it's up, although the numbers on the tension dial may move, the tension settings on the disks don't.
3. Remember that the numbers on the tension disks are relative. Generally, "3" is a good place to start, but it's only a number. Increase the numbers to tighten the tension, decrease them to loosen it.
4. Use different color threads in the top and in the bobbin to make changes easier to see.
5. Sew a few inches, stop, and examine the stitches. Adjust the tension just a little, stitch a bit more, then examine again. Repeat as needed until there is no (or very little) of the top thread showing on the bottom fabric and no (or very little) of the bobbin thread showing on top.
But how do you know which way to adjust the dial?
This is where a lot of the confusion seems to come from, because it 'seams' backwards! Look carefully on the bottom, the bobbin side. If you're using the same color threads both on top and in the bobbin, it can be hard to see, but usually what you'll see if you have 'loopy' threads on the bottom, is that the loops are actually the top thread and that the bobbin thread is laying on top of the fabric. Using different color threads makes this obvious.
What's happening is that the top tension is too loose, so it's not pulling the bobbin thread up into the fabric.
There's a tendency to see the loops on the bottom and think the bobbin tension needs adjusting, but the real problem is with the top tension. (There is a bobbin tension adjustment but you shouldn't have to mess with that very often, if at all.)
I've posted a couple of photos at www.robbiesews.blogspot.com so you can see what I mean by balanced tension.
Happy Sewing!


on Mar 10, 2010 | Sewing Machines

1 Answer

My top thread has large loops on the bottom, bottom thread is normal. I have tried to adjust the tension but it does not help


The bobbin also has tension adjustment. Take bobbin out and try making it tighter. Also make sure thread is threaded properly on bobbin.

Mar 02, 2015 | Sewing Machines

1 Answer

How can I adjust my lower tension? I have an older Kenmore.


REMOVE THE BOBBIN AND BOBBIN CARRIER. HANG IT FROM YOUR FINGER. MOVE YOUR FINGER SLIGHTLY UP AND DOWN. YOUR THREAD SHOULD EXTEND ABOUT ONE INCH. MAKE SURE YOUR BOBBIN IS INSERTED RIGHT. IT IS USUALLY FEEDING YOUR CARRIER IN A COUNTERCLOCKWISE DIRECTION. ANYWAY, WHEN THE BOTTOM THREAD LOOKS LIKE A MESS YOU NEED TO TIGHTEN THE TOP THREAD. IF THE THREAD IS ONLY A SMALL LOOP ONCE IN A WHILE IT IS A SIGN THAT THE TOP TENSION IS ALTERNATING BETWEEN LOW AND HIGH. YOU NEED TO CHECK FOR JUNK STUCK DOWN IN THE TENSION BETWEEN THE TWO SHINY SAUCER SHAPES. THE OTHER PROBLEM THAT IS OFTEN A PROBLEM IS POOR QUALITY THREAD. LOOK AT IT IN A LIGHT AND SEE IF THERE IS A LOT OF FUZZ. THIS IS AN INDICATION THAT YOU NEED TO REPLACE THIS THREAD.

Dec 27, 2014 | Sewing Machines

1 Answer

Bottom tension adjustment on singer athena 1060 sewing machine


Have you tried putting the Bobbin in up the other way, and sliding it through the bobbin case !!!!

Nov 21, 2013 | Sewing Machines

1 Answer

The stitching is not right. It looks fine on the top of the fabric, but bunches up on the bottom


Looping or bunching on on the bottom is a result of problems with the TOP TENSION.
Rethread the upper thread and adjust tension. Try again.

Jul 05, 2012 | Brother CS6000i Computerized Sewing...

1 Answer

Top thread is knotting up on the bottom even if I switch out thread or bobbins. seclector is on A length is on 2 and width is on o


Hello,

It sounds to me as if your top thread tension is too loose or your bobbin thread tension is too tight. The top thread is tangling underneath and is probably making big loops. Consult your owners manual on how to adjust thread tensions.

Good Luck!
Chris
glfi.com

May 22, 2011 | Sewing Machines

6 Answers

The bottom thread gets all knotted up when I sew... everything locks up and there is a mess of thread on the underside of what I'm trying to sew. help?


The tension in the top thread is controlled by a dial, and the tension in the bottom thread is controlled by a small screw on a spring on the bobbin. The tensions are supposed to be exactly equal in order to make the stitch perfectly in the middle of the cloth. Uneven tension will pull the stitch up or down from there. You can tug on each thread to feel how much tension there is. Often the bottom will get too much tension by just inserting the bobbin upside down. Leave the bobbin door open, and watch the operation. The top thread is pulled down around the bobbin. See if it is getting caught on anything?

Dec 18, 2009 | Singer 3116 Simple

2 Answers

March 12, 2009 kenmore 385.17922 sewing machine ***this site won't let me ask a question - because it doesn't have this sewing machine in it's PRODUCT LIST...but i'd still like to ask the questions, and...


Dear VeeVeeV,
when I've had that problem it was due to incorrect threading of the top thread. Sometimes it "jumps" out of one of the thread guides, particularly the round one with the tension spring. The bottom thread looping & the machine not sewing is my first clue sometimes that it's done that. good luck, Georgia

Mar 12, 2009 | Singer 3116 Simple

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