Some of us don't have the confidence to take things apart without having someone show us first. Manuals aren't always helpful especially if you are a visual person. I still can't figure out where the manual is trying to show me where to oil my machine. Took a guess and it seems okay but I'm not sure I was right.. It took me years to get brave enough to clean and oil my sewing machine. I was afraid I'd do something wrong. I would have happily paid $10.00 for some guidance.