I couldn't find a free repair manual online, but I did find a picture of your machine. Just look for amy small round holes and put a few drops of oil in them. Remove any obvious screws and oil any parts that look like they move. Don't forget the bobbin area. My Elna has a little hole under the drop in bobbin that takes oil, plus a few on top and a few on the bed.
If you're not comfortable taking the machine apart, then just oil the holes and be sure to clean out all visible lint. Sewing machine oil only, of course.