Miriam, I'm not sure I've ever seen that much lint/dust in/on a sewing machine. Wow! Well, my son found some of the same sort of dust/lint under the hood of my car. Unfortunately, it got there from the squirrels chewing on the wire and hoses -- making it run really bad -- which was the reason he had the hood up in the first place! I'm just glad squirrels can't get into sewing machines!
Jeanette