Hello Linda,
Take the top off the machine, take the bottom off the machine, oil all the moving parts that you can see with WD40, turn the balance wheel by hand to see the parts move, do the same for the bottom of the machine, for manuals try www.sewing-machine-manuals.com and click on relics then find Singer machines or www.sewingonline.co.uk/instructions.
Ken
drivewithken, December 2009