The model number is somewhere, possibly on a plate on the back of the machine or possibly underneath. On older Singers, the model number is represented by the serial number, ie serial # through serial # is a Model 66.
You can try searching the internet for:
White Model# manual
However, with the age, it may be difficult to find anything.
...
Unable to locate information on this particular machine, however, 99-1 chance it needs a good cleaning and oiling, especially if it has set without use for a long time. The old oil dries and the parts start sticking together.
1. Replace thread with good thread. (Check by holding to light to see if there is fuzz).
2. Adjust the bobbin tension. The tension on top is set to three and the bobbin tension should be equal to this amount.
3. Replace needle.
4. Check the top tension with tension foot down to see if the thread can move or does it get stuck? If it gets stuck the tension control may need adjusted or cleaned.
5. Pull the bobbin thread above the throat plate and pull on the thread. It must have some tension but not get stuck.
TENSION TENSION TENSION IS THE PROBLEM!
Check the stitching and confirm that it is in fact bobbin thread and not the top thread that is creating knots & loops under the fabric. This is usually the case and is called thread nests or bird nests. (You can search the internet for more information about this symptom.)
Install a brand new needle.
Remove the thread from the machine.
ALWAYS RAISE the presser foot while rethreading the upper thread.
Confirm the thread path is correct.
Verify the bobbin is installed facing the correct direction in the bobbin case and the bobbin case is threaded properly.
Set the upper tension to the midway point (factory standard) although it may need to be tweaked as machines change with use and time.
Pull up the bobbin thread. This method works with general sewing projects, not just quilting.
How and Why to Bring up the Bobbin Thread
Begin to test sew slowly.
If the thread is still making a mess, then the machine most likely has a timing issue. There are multiple web sites and videos that discuss sewing machine timing. Or take it for service.
...
Difficult to say without actually seeing the machine. You could probably take it (or a photo of the machine) to a sewing machine repair shop and ask them to identify the machine.
Perhaps this would help:
Instruction Manual White 660
...
It has most likely seized due to lack of oiling. Apply a couple drops of liquid Tri-Flow Synthetic Lube to the feed dog mechanism and then direct hot air from a handheld hair dryer into the internal mechanism. Alternate lube & air--may take several times over several days. Eventually, it may loosen. Do not force the feed dog knob, but wiggling it may loosen things.
...
Most handy guys and girls have a voltage tester (meter or a light) that can determine if your foot control is allowing any power through.
If it is fried, it may be a contact arm inside it, and you can have your local handy guy repair it or splice any old controller onto your machine plug. Or order a replacement on eBay. *Make sure your outlet is turned on - test with another electric device like a light or radio.
Thread take up lever needs to function properly for sewing to happen correctly. Have a trained repair technician make the repair.
Make sure they let you know how much repair is after diagnosis is made.
Cheers,
Embroidery Services
San Diego, CA
First thing to try is a brand new needle. A bent/damaged needle may not be able to pick up the bobbin thread.
Otherwise, it is possible it has a timing issue, ie the needle is arriving at the bobbin at the wrong time in order to connect with the bobbin thread. Search the internet web sites and videos. There is a lot of information on how to fix sewing machine timing. Or take it for service.
...
the information should be In your manual, if you do not have a manual, send a comment with the name and model number of the sewing machine or serger, and someone can help you with the question
