Ok so you may not need to take off the plates in your sewing machine for a really long time, but sometimes you need to. It gets really fuzzed up in there and that can interfere with your sewing. My particular model of sewing machine has the bobbin cover, then a plastic plate, then a metal plate directly around where the actual sewing takes place.
In order to remove the plates you must first take off the bobbin cover, that is easy enough. Set it aside somewhere where it doesn’t get lost or mistaken for some other junk. Next you have to unscrew the screws which hold the metal plate in place because the metal plate and the plastic plate snap into each other.
My sewing machine came with a screw driver, which is too big to do this job, but it works fine for changing feet. Get yourself a penny dated after 1981 to do the job for you. Pennies minted after 1981 are Zinc instead of copper and only contain a copper coating. That way if you scratch it up, which you will, you aren’t flaking off pieces of a semi-precious metal. (a little aside not, pennies made before 1981 are actually worth about 2.5 cents).
Use your penny to unscrew the two screws. Put the screws aside where they will not get lost. Then take the metal and plastic plates off. You can now see what is shown in the picture. My Sewing machine was full of fuzz bits. These aren’t going to help my sewing so I’m going to get rid of them. What I am going to use? Compressed air!
Unless you actually know how to work on a sewing machine don’t stick anything else down in it. Get a can of compressed air, which you can usually find with the computer implements in any store and use it to spray the fuzz out of your sewing machine. Make sure you use the little straw tube that comes with the can to get behind pieces of machinery in your sewing machine. Once the inside of your sewing machine is fuzz-free to your satisfaction, replace the plates. They may take a little jiggling, pushing, and pulling to be put back in their proper places. Once the plates are in the right place screw the two screws back in with your penny. Then replace your bobbin cover.Put your penny with your sewing implements, so you know where to find it.
Your sewing machine is now fuzz-free.