My tech. taught me what I know about the care of my featherweight. 1. BE SURE to use sewing machine oil,as another person said. I get mine at Wal-Mart, but probably the same thing as Joann's; as long as it says for Sewing Machines.
2. The most important place is the bobbin. He suggested the little gear you can see in the bobbin area all a drop of oil.
3 On the left side, take that plate off, and oil wherever there are small gears and small holes for oil.
4. On the top of the machine, just a drop in each of the oil holes.
5. Tip the machine so you can get to the underneath. Take the bottom off and oil any gears, ect. When done, put the bottom piece back on.
6. I use a different oil--in a tube for the motor for the motor on the back. Haven't had to buy oil as there as quite a bit in the tube. I am sure Joann's would have the oil for the motor.
Have never done anything to the outside of my machine but wipe it down with a soft cloth,
Works for me; good luck!
Mariah