You NEVER want to use canned air on your machines, it will force the lint back and pack it in, and you will have real trouble then. What you want is an attachment to your vacuum cleaner, they sell them at sewing stores or computer stored, you want to vacuum the lint OUT, not pack it in...and use a brush under the throat plate first to loosen threads and such. If your machine requires oil, only oil after thoroughly cleaned, otherwise, you might be down until you can purchase a new machine. Don't even ask me how I know all this....