OK,so Singer does NOT have the manual for this machine. I don't think I need many parts and I can find them with that parts list. However, there are some buttons on the throat plate I have no idea what they are for. They seem to engage into parts on the drive shaft underside of machine to stop different mechanisims. I am assuming they might be for setting timing or some other mechanical repairs. They are not the "oiler" spots for the old oil tin can... anyone know?