Originally Posted by
Prism99
A jam like that can throw the timing off. Although it's possible to fix timing on some machines at home, it's a pretty touchy thing. Most people would have a technician do it. Timing has to do with how the needle interacts with the bobbin. Once that is thrown off, the needle won't bring the bobbin thread up.
I was going to tell you the same thing...the timing is off.
The repairman I use has a policy that if the machine has been taken apart by the husband...he charges by every piece he has to reassemble. One older man brought his wife's old Singer in for repair in a shopping bag...lots of loose parts. It took the repair man hours to reassemble the machine.
Hope that your husband was able to fix it himself....