Different parts of Sewing Machine and its function

1. spool pin- hold the spool of thread.
2. presser foot- holds the fabric in place while sewing.
3. thread guide- keeps the thread in the correct position.
4. uper tension regulator- regulates the tightness and looseness of thread.
5. stitch regulator- regulates the length of stitches.
6. thread take-up lever- moves the thread up and down.
7. needle clamp- holds the needle.
8. presser bar litter- lowers and raise the presser foot.
9. feed dog- moves the fabric as sewing goes on.
10. balance wheel- the wheel on the right side of the head which control the movement of the needle.
11. robbin winder- use to wind thread on the robbin.
12. belt- connects the balance wheel and the drive wheel.
13. drive wheel- the big wheel below the machine that is connected to the treadle.
14. treadle- the place for the feet.
15. bed- the flat base of the head which rest in cabinet.
16. throat plate- the metal plate the covers the feed dog.
17. dress guard- it is located where the drive wheel is to protect the dress of the sewer when the machine is moving.

knowledge on the parts and function of sewing machine will help you much in determining the causes of unsatisfactory sewing performance.  Like other equipment sewing machine may not function well.  if not used or maintained proper care and maintenance should be one of the sews to avoid trouble when sewing.