Schematic thread keeps bunching up around the bobbin. Is this something I can fix? This machine has been a problem since the day I bought it from Joann Fabrics.

SOURCE: Top thread won't catch the bobbin thread

First check the upper and lower tension adjustments according to link below and then check the knob (bobbin case) that makes the bobbin tension which lies inside the shuttle if it is too loose. Restricted it with the sheet metals around it so that it shouldn't move so freely up and down or back and forward. Be careful it should move freely a little but not too much.
http://www.wikihow.com/Adjust-the-Tension-on-a-Sewing-Machine
@ytac...

SOURCE: I have a WHITE 3300 EMBROIDERY MACHINE and the

Refer to your machine for cleaning the bobbin area.

You will need to clean this area often as lint and thread snips can build up can cause the bobbin feed to malfunction.

If this continues after you have cleaned the machine, the timing may need to be adjusted by a sewing machine tech.

SOURCE: Piece of ****

the thread might be old because mine did the samething and i bought new thread and it works fine

SOURCE: White #32548 sewing machine.

1.needle in backward
2.needle bent or blunt
3.rethread
4.check for lint or thread fragments in bobbin area

SOURCE: I have a newer White D'Lite sewing machine that I

I am surprised that JoAnn's can't tell you, more than likely they use a #15J Singer brand or a SA 156 metal (Ebay, 20 for $8.99 +free shipping). Good luck