Question about Kenmore Drop-In Bobbin 16231 Mechanical Sewing Machine

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Bobbin stitch When I sew my top thread stitch is perfectly straight and in line but the under stitch is slanted upward. What can I do to straignten it out again?

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Re: Bobbin stitch

What thread brand/type are you using?
Coats Dual duty and All Purpose are sometimes to blame for tension issues.

Is your top tension set at 4?

Have you made an adjustment to your bobbin tension? (Don't if you haven't)


Posted on Jul 30, 2008

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2 Answers

Why isbobbin stitch on top weird how do i fix

sorry but the bottom stitch does not move but the top one does . if you want straight stitch the machine setting has to be changed to straight .

May 22, 2015 | Sewing Machines

1 Answer

Bottom thread is still loose even if i try to balance the tension, how do i balance the thread tension?

You bobbin tension CAN be adjusted. First, thread your machine with different colors in the top and bobbin, set your top tension at its default, and run a line of straight, and then a line of zigzag stitches, and compare the results at the top and bottom. You will be adjusting your bobbin to your top tension. If the top tension looks like a straight line instead of stitching and the zigzag looks like "chicken tracks" instead of a zigzag, but the bottom looks like a zigzag, your bobbin tension is too loose.

Remove the bobbin case, and locate the straight-slot screw. There are generally two; one is a Phillips and one is straight--you want the straight one. Leave the other alone.

The rule is "lefty-loosy, righty-tighty." If your stitching displays the above symptoms, it needs to be tightened, so turn 1/4 turn to the right--no more--then test again. You will need patience, but don't turn more than that. It is easy to do, but if you don't do it systematically, you can make things worse, and very slight adjustments can alter the stitching significantly.

Apr 15, 2015 | Singer Sewing Machines

1 Answer

When I embroider with my Pfaff Creative 2 the top tension pulls bobbin thread up too much. I changed toe tension on top but it still does the same thing. How can this be fixed?

Suggest you do rethreading ,then test the stitches on straight stitch. If top stitches is loose you have to reduce the upper thread tension, if the bottom stitches is loose you have to increase the upper thread tension. Adjust accordingly till you can get a perfect straight stitch. If okay then you can continue your embroidery work.

Oct 31, 2013 | Sewing Machines

2 Answers

The bottom stitching looks like a line and not stitches the top stitching is fine

whether its bias or straight does not matter to machine. loosen the bobbin tension and put more tension on take up spring by inserting a screwdriver in the slot of the top thread tensioner. turn to right.

Dec 13, 2012 | Juki DDL8300N Sewing Machine

1 Answer

Bernina activa 210 won't zigzag and has bobbin issues on straight stitch

it's very possible that the machine is slightly out of time & needs to be service at a sewing machine shop
is the fabric & thread & needle compatable with each other?
did you use every thread guide when threading the machine?
is the bobbin in correctly?
is the bobbin warped?

Mar 20, 2012 | Bernina Sewing Machines

1 Answer

Top thread is ok but bobbin thread misses stitches at will, zigzag stitches don't sew but a straight line. changed needle, sanded burrs off pressure plate, cleared bobbin chase of lint. what have I...

check tension usually 3 or 4 is good
clean under needle plate where feed dogs are for lint
is the flat side of the needle toward the back of the machine
rethread machine
is needle the right one for the fabric & thread
it might also need to be serviced

Nov 24, 2010 | Kenmore Sewing Machines

1 Answer

The tension for embroidery is way off. The only thread visible is the bobbin thread. The top thread is almost invisible. Straight stitching tension is not perfect but OK

It sounds like the thread did not stay in the bobbin tension slot correctly. Try putting the bobbin in again and sure you have a suitable bobbin thread. If that does not work then a new bobbin case is what you probably need.

Aug 30, 2010 | Janome Memory Craft 9000 Computerized...

2 Answers

Trying to sew straight stitch but stitch loose and lots of thread on bottom

No top tension, follow manual to thread top again and make sure tension dial is set to 5 and thread is pulled between the tension discs fully.

May 21, 2010 | Singer 57815 Mechanical Sewing Machine

1 Answer

Hemming Levi's for husband. Using thick "jean" thread. Used 16 needle. Top stitch is perfect, bottom thread is anything but straight. I've re-threaded, cleaned the "hook", changed to a 14 needle. I...

Hi! Sounds like you're doing everything right to me, so let's see.

By not getting a straight stitch on the bottom, do you mean that the bobbin thread is loopy? If so, then most likely you have to reset the tension. Get a scrap of jeans material and practice on would be great if you could use different color threads on top and in the bobbin, but that might not be practical if you don't have the jeans thread in different colors already.

You'll be adjusting the top tension, because even tho the top stitch looks perfect, it may not be tight enough to pull the bobbin thread up into the fabric where it belongs.

Sew a couple of inches on your scrap, then stop and check the bobbin thread. If it's loopy, you can also see the top thread on the underside. (Which is why using two colors is helpful.) With the pressure foot down, tightened the top tension just a bit. Sew a few more inches and check again. Keep on sewing, checking, and adjusting until you can't see any (or almost any) top threads on the bottom or bobbin threads on top.

Here are a couple of other ideas to check:

1. Make sure your bobbin is inserted correctly. If I happen to put one in backwards by mistake, the bobbin will make a lot of clanking noises.

2. Using your flywheel, lower the needle all the way through the stitch-making process to see if it's hitting anything along the way.

3. Oil your machine.

4. Make sure all the screws etc on your throat plate (also called needle plate) are tight. (I've had mine get loose and that will definitely throw a knock into the works!)

Check out these ideas and let me know if anything works, or if the problem is still there, ok?

Happy Sewing!


Feb 18, 2010 | Singer 7466 Mechanical Sewing Machine

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