I have a brother and every once in a while I have to oil it around the bobbin area. Check and see if there is any place you can put a drop or two of oil around the motor area. I know most manuals say no need to oil, but I have always oiled my machines and they seem to sew forever. I didn't pay all that much for my machine either but I keep it in good shape anyway and have never had a problem when I oil it. Just make sure you sew a piece of scrap fabric so any extra oil comes off on the scrap and not the nice fabric you are using for a project.