I am a sewing machine. Please clean all the lint and fuzz balls out of my working parts. Please remove my needle plate and clean all the felted fuzz from between my teeth. When you put the needle plate back on remember to have the little finger of the bobbin holder in the right position. If there is thread wrapped around down there, take that out, as well. It may take some time,but I will work better for you afterwards. Remember to oil all the places that the book says to put a drop of oil, just make sure you use sewing machine oil. Change my needle after every 8 to 10 hours of sewing. (15 years, yikes...that hurts my feelings). If you don't feel confident doing it, YES, it is time to have me serviced.