Hello Helen,
Not too sure if you have a two piece plastic body on that machine or not, if you have you cannot get to the inner parts without taking the body apart which is not easy, I would oil all moving parts that you can see sparingly with WD40, clean out the bobbin case area and a few drops of oil in there, a few drops only on top of the needle bar and any moving parts, if you can take the bottom off the machine a few drops of oil on all moving parts.
drivewithken@blueyonder.co.uk
Ken
drivewithken@blueyonder.co.uk, February 2008