If the feed dog doesn't move, the nylon bobbin drive gear is broken and needs to be replaced. This is *the* most common problem with this machine.
Be sure you have the stitch length set high enough that the fabric will actually move instead of sewing mostly in one spot.
One other thing to check is the presser foot applying enough pressure to the fabric so that the feed dogs can grab the fabric? On the top left side of the machine, there is probably either a dial or a push-type button. That would most likely be the pressure adjustment. The tighter that is set, the harder the pressure the presser foot will apply and the more the feed dogs will grab the fabric.
Check that the feed dogs are in the "up" position so they will pull the fabric through the machine. Are the feed dogs actually moving forward, raising above the needle plate, pulling toward the back of the machine, and then dropping below the needleplate before moving forward again? If not, then the problem could be with the feed dogs.
Your machine appears to be a mechanical model. If so, it could be the machine needs a good over-all cleaning and oiling--a couple drops of fresh, good quality sewing machine oil every place that metal rubs on metal (no plastic parts, belts...). Feed dogs are frequently affected when the sewing machine does not receive regular maintenance.
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SOURCE: backward stitching
Knowing which kind of machine you have helps alot. Just guessing but maybe the reverse mechanism is stuck and needs some oil in it to free it up. Or the buttonhole mechanism is stuck in reverse part of it.
Probably you should have it looked at.
SOURCE: thread jamming, wont feed material, sewing in one place
Try moving the stitch length dial to 4 or 5 - check the manual. You may have it in the position for very close together sewing. I had to do a lot of trying with my 4795 to get it to work right. I found that very thin thread, polyester kind, broke at the needle after a couple of stitches. I switched to coats & clarks thread and a Singer ball point needle and it works fine. Be sure your needle is inserted with the flat top toward the back of the machine. Good luck!
SOURCE: I purchased an older Singer Stylist zigzag model
I can definitely help you with the owners manual. Go to http://parts.singerco.com/IPinstManuals/457A_105_125_135_143A.pdf and you can download it direct from singer, no viruses, nothing. Just save it in Adobe format.
The bobbin thread problem is called a birds' nest and can be from a number of problems. First thing to do is to change your needle, especially if it was the one you bought the machine with. It may look perfectly straight to the naked eye. But it only needs to be a little bent to cause a problem. If this doesn't clear the problem up, make sure you're using a new bobbin, freshly wound. If the bobbin isn't wound properly or is an old bobbin that's slightly bent or not quite round, it'll cause problems, too. Finally, the machine may need a new bobbin casing. Do a google search for Singer sewing machine parts and search for a bobbin casing for a model 457. You'll remove the plate from the top of the machine CAREFULLY (the screws are small, so be careful not to lose them!). Take pictures if you need to with your cell phone so you can see what to do when you need to put the new casing in. Bobbin casings are usually $25-30. This is the last thing, and I would only do this if you see that thread is catching on something in the bobbin area when you're moving the wheel by hand.
I've tried to be clear on the last bit, but I realize it can be a little awkward. If you need any other help with that, please leave me a comment back. It goes straight to my email, so I'll see it quick and will get back to you right away. The manual doesn't help a lot with your bobbin problem, so I'll do whatever I can to help you through it and get you sewing. Good for you for finding a great garage sale find!
Re: Reverse feed dogs on Singer 4423 Remove extension table so you can see switch on BACK of machine @ left side. Flip switch to raise feed dogs up. If machine actually sewing in reverse - check n Buttonhole adjustment. Reset it (located bottom right side machine) Jimmy
SOURCE: Singer 758 model and the thread is bunching up from the bobbin under the material
try changing the needle--flat side goes to the back of machine
rethread the machine top & bobbin--make sure to use every thread guide
make sure bobbin is wound correctly & inserted correctly in the bobbin case
clean under the needle plate & in the bobbin area for lint or loose threads
if you don't have a manual try singer
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 758)
Click search
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