Hi Zozee. These machines are so solid that they almost never need adjusting, so seeing that you've never got it working, I need to ask a really fundamental question. Please don't feel offended by this: I'm not calling you stupid.
What is its serial number? Threading the wrong way is what all of us would suspect first (which is obvious by the responses) so I'm wanting to check the exact model beyond any doubt. Right to left threading is rare and is the case only with a few Singer models.
You could also post a picture of your lovely machine.
Last edited by manicmike; 07-18-2014 at 03:48 PM.