How do I change the bobbin tension?

SOURCE: Singer CE-100 Embroidery thread bunches up underneath fabric

I had this problem and it all came down to using the wrong backing. I kep trying to use tearaway on everything but WRONG. Using the proper backing corrects most problems. Good Luck!

SOURCE: Singer 6217C Bobbin Thread bunching

please check out this link


http://sewvacdoctor.com/cate.asp?categoryID=6#1082

goodluck
 thanks.

SOURCE: Singer Simple bottom thread is loose

hi there
raise pressure foot up thread making sure thread passes between thread guide this should solve problem never alter bobbin tension,
mary h

SOURCE: I have a singer futura ce-250/ce-350 machine.

I have been sewing for quite some time on other machines. I assumed I knew all that I needed to do and I have the same problem, bunching undeneathe. I found out my problem was twofold. One when you thread the top part - you should pull the thread back and forth in the top thread guide. (#1 in the manual page 6). The second thing was the curly tail in front. It really needs both of these. I hope this helps you. Made me feel really inexperienced. I actually pulled out the manual.

SOURCE: Singer 4623 bobbin thread won't catch

Hi! Did you by chance, change your needle? If so, make sure you have the flat side of the needle shaft facing the correct direction. If the needle isn't in all the way or the flat side of the shaft facing the right way, the bobbin thread won't pick up.

Let me know if this helps, ok?

Happy Sewing!