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Bobbin stitches are straight then get occasional loop. Can I adjust the bobbin tension myself? Or give her up to the repairman- boo hoo

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You will have to post make and model to get a detailed answer.

You should be able to adjust the bobbin tension. If the bobbin fits inside a metal bobbin carrier, there is a small screw on the side of the carrier that can be tightened or loosened. Of the bobbin sits free, somewhere in the thread path is a spring loaded point with a screw for adjustment.

You manual should tell you how to do this. It's not very hard.

Posted on Mar 31, 2015

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How to adjust the bobbin tension.


According to the manual, you should not need to adjust the bobbin tension (and I located other sites which stated the bobbin tension cannot be adjusted on this machine). Apparently, all the tension adjustment is accomplished through the upper thread::
"EN Thread Tension Upper thread tension Basic thread tension setting: "4". (1) To increase the tension, turn the dial to the next number up. To reduce the tension, turn the dial to the next number down. A. Normal thread tension for straight stitch sewing. B. Thread tension too loose for straight stitch sewing. Turn dial to higher number. C. Thread tension too tight for straight stitch sewing. Turn dial to lower number. D. Normal thread tension for zig zag and decorative sewing. Correct thread tension is when a small amount of the upper thread appears on the bottom side of fabric. Lower thread tension The bobbin tension has been set correctly at the factory, so you do not need to adjust it. Please note: - Proper tension setting is important for strong seams. - There is no single tension setting appropriate for all stitch functions, thread or fabric. - A balanced tension (identical stitches both top and bottom) is usually only desirable for straight stitch construction sewing. - 90% of all sewing will be between "3" and "5". - For zig zag and decorative sewing stitch functions, thread tension should generally be less than for straight stitch sewing. - For all decorative sewing you will always obtain a nicer stitch and less fabric puckering when the upper thread appears on the bottom side of your fabric. 1 A B C 22 D"

Doing further research, I found this statement on a machine review site:
"After reading reviews online from where I've bought my drop-in bobbin machines, I think many of the negative reviews are due to the bobbin thread coming up without laying across the bobbin. It can cause the stitches to look very sloppy and no amount of tension adjusting can fix the stitches."

There are several machine review sites wherein 4423 owners stated their disappointment in the 4423's performance. Some said the machine failed almost immediately and others said the machines developed problems when sewing heavy fabric.

Apr 26, 2015 | Singer 4423 Sewing Machine

1 Answer

Why is the bottom stitch straight


Thread tension is a BALANCE between the top tension and the bottom tension. It appears that your bobbin tension is sightly tighter, causing the top thread to be pulled down. Run a zigzag stitch. If your top looks fine, but your bottom looks something like chicken footprint tracks, see if you can adjust your top tension a little tighter to compensate. If, in doing that the stitches are balanced but just too tight, you will need to adjust your bobbin tension SLIGHTLY looser. You will need a tiny screwdriver to do this. Take the case out and locate two screws on the side. Once is a Phillips--leave it alone. The other next to it is usually on the left of the Phillips, and, is a straight-blade screw. Lefty-loosey, righty-tighty. In your case, you want to adjust it a LITTLE looser to match the top tension--no more than 1/4 turn. Put it back and test it again; you should see some improvement. If it still needs a little adjusting, reinsert and repeat, but ONLY 1/4 turn at a time.

DON'T fool with it at all if you can compensate by tightening your top tension, and before you do anything, clean and oil your bobbin area with ONE drop and ONE only of sewing machine oil.ONLY. You might find that just cleaning and oiling will solve your problem right there.

Jul 06, 2014 | Singer 6038 Mechanical Sewing Machine

2 Answers

My Bernina Bernette 65 has a problem with the thread bunching up every 10-15 stiches on the bottom. Some of the thread stitches on the bottom of the fabric are in a straight line, and then the thread will...


try a new needle--one that is for the fabric being sewed
then try to adjust the top thread tension again, if the stitches remain loose and the tension won't adjust then the tension knob needs to be checked to see if there is something wrong with it.
also check to make sure the bobbin is inserted correctly into the bobbin case, if the bobbin is not turned the right way in the bobbin case the sewing machine will not stitch correctly.

Aug 05, 2013 | Bernina BERNETTE 65 Mechanical Sewing...

1 Answer

How to adjust tension on bottom stitch?


There are tow places where the thread tension is adjusted.

One is bobbin. This is not routinely adjusted. Just once and it is good for long time. This is done by turning the only screw on bobbin by about 1/4 turn or so at a time. Try several settings until you find he best.

the other place is the conventionally on body of the machine.

Tension of bottom stitch or top stitch are very confusing words. meaning difft things to difft pple.
All i can say is this. If u see bottom stitch run straight through loops of top thread. then either top tension is too loose or bottom too tight. and vise versa.

With top tension set to middle position adjust the bobbin to get correct stitch. Then later on all u need is to adjust only the top setting according to stitch and cloth


Oct 16, 2009 | Brother LS-2125 Mechanical Sewing Machine

1 Answer

Juki HZL-E61: cannot get tension right on straight stitch


Loops on the bottom of the fabric direct the problem to the top thread. Rethread again and make sure the thread goes through the tension discs. Lift the foot, because this is what opens the discs. When sewing and the foot is down, the discs should be closed and thus giving the upper thread the tension it needs.

May 25, 2009 | Juki HZL-E61 Computerized Sewing Machine

1 Answer

Top thread tension tight


March 12, 2009

kenmore 385.17922
i have started using my machine again (after several years) and am doing patchwork.. all has been fine, and suddenly the bottom thread (bobbin) is looping. i've adjusted the tension nob from 4 (where i had it) to 5...back to 4.. 41/2....3 1/2....5 1/2... on and on and the bottom thread still keeps looping.
i've read and re-read the manual...and the only suggestion it gives is to adjust the tension button.
it's not working...... what else can i try??
thanks
eva

Mar 11, 2009 | Kenmore Sewing Machines

1 Answer

Singer 221-1 stitching is good on bottom but not on top


pucker is caused by too loose or, to tight adjustment of: the thread tensioners both the bobbin tensioner and, the needle tensioner need to be adjusted: to adjust the needle tensioner turn the side knob clockwise is tighter counterclockwise loosens; the bobbin tensioner is a tiny screw on the bobbin holder adjust both tensioners until your stich loops' both top and, bottom are tight but, the machine does not break the thread

Feb 16, 2009 | Singer Featherweight II 117

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