Mickey2

You will probably find a manual given time and persistance, but the general way about it is; spool pin, then aim for the top tensioner; look for thread guides a long the way, it's usualy intuitive and the only thing you can get wrong is possible guides for the bobbin winding funciton. Make sure the thread goes inbetween the tension disks (there's two or three of them, three for models that take twin needles) and that the thread goes correctly in place with the check spring. Keep looking for guides along the way; aim for the take up arm and then towards the needle. There's a downward pointing hook shaped part left of the tensioner, I think the thread goes through it before the take up lever.

Detect all oil points, take off throat plate, bobbin cover, bobbin case, clean well. There's probably oil points under the top, the face plate (often hinged on these, or a screw than needs to come off), and there a few under the base of the machine. These machines have to be oiled and run a bit if it's been a while.