Top stitch looks good, bottom stitch is loopy

check that the bobbin underneath has the same thread as the upper bobbin and that you push all the way on the lever when sewing back and also, go full speed as this happened to me and that was my mistake. Hope this will help you :)

Check your upper threading. Make sure it's between your tension discs. Remember loops on bottom, something is wrong with upper threading/tension. Loops on top something is wrong in the bobbin area (like the bobbin being in upside down or a loose bobbin tension spring)

start by rethreading the top thread with the presser foot UP.

try a new needle
rethread the machine top and bobbin
make sure the bobbin is turned the right way in the bobbin case
try adjusting the top thread tension
if these suggestions don't help then it would be a good idea to have the machine checked

Skipped stitches
1. The needle is not inserted correctly
Remove needle & reinsert needle( flat side towards the back of machine)
2. The needle is damaged
replace with new needle
3. The wrong size needle is being used
Choose a needle to suit the thread & fabric
4. The foot not attached correctly
Check & attach correctly

adjust the top tension one number or letter higher when the stitches
on the bottom are loopy, until the stitches become normal
also change the needle--flat side to the back side of the machine

check with singer website for a manual--some times they have free
pdf downloads

Go to the singer website

Click on customer support--there will be a drop down menu

Choose instruction manual

In the box type the model number( example 2010)
Click search


having a machine serviced once a year is a good idea & makes the machine last longer
and the sewing machine shop will tell you if they can get parts for the machine & if the machine is worth the money to fix it.

I myself have 2 sewing machines, when one is being serviced then I have the other one to use, so I'm not with out a sewing machine when I need one.
good luck
Debbi

Check your top tension. It sounds like it may be too loose or the bobbin tension may be way too tight. Most likely it is the top tension that is incorrect though. The TOP tension effects the bottom side of the stitch and the bottom tension effects the top. If the top tension isn't tight enough it won't draw the thread up through the top side taunt enough and the excess underneath makes a big loopy mess.

Your top threading is not right, check to make sure that your thread hasn't jumped out of a guide. Totally rethead with the presser foot up, now pull thread, it should move smoothly, next put the presser foot down, the thread should barely move. This will seat your thread in the tension discs. If, that does not work, insert a new needle.

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 that....it 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!

Robbie

FYI.. Loops on the bottom, problem is on the top..
Loops on the top, broblem is with the bobbin.

it's the tension on the top thread.  rethread the machine and make sure the thread actually goes into the tension discs.  the thread should flow with resistance.  very good explanation of the problem by the way--good luck and enjoy sewing!

It's possible that there is foreign debris in the top tension assembly ,thread the machine and lower the presser foot and ensure that there is tension on the top thread