well, I see the wall plug wound up in the cord..
the 'plug' to the left is what goes into the end of the machine...
I'm wondering if that round plug thing goes to the light?
plug the machine part into the machine
wrap up that round doodad with black electrical tape (so you don't get zapped), plug the wall plug into the wall and see if the thing runs!
mine has two wires coming from the machine plug - one to the foot pedal and one to the wall plug..
otherwise join the 'vintagesinger' or singer group at yahoo groups and ask some of the old singer repairmen who run the two groups what they think instead of just letting the machine sit
or buy a new cord/foot pedal set - my sister did a few months ago
also info found at those forums for that
the 301 is a WONDERFUL quilt machine...
don't let it sit idle