Originally Posted by eparys
Here are my recommendations:
1 Re-oil it (mine requires ever 10 hr - i do it about 8)
2 Completely re-thread the machine (take off the spool and start like you had no thread on it)
3 Take out bobbin and carrier - remove bobbin and re-insert (I too when in a hurry can do this backwards)
4 Clean out lint from thread plate and bobbin area
5 New needle
Good Luck!!
I agree with all of the above and especially the new needle. I was advised to put a new needle for every quilt which seems excessive to me but truly does make a difference. Also was advised that even if I did put in a new needle and ran into problems, try another needle as due to mass production, some do come with tiny flaws that wreak havoc on our sensitive electronic machines. Are you using the same brand of thread you used on the first quilt? It could be a thread issue as well. Good luck.