Note by Evelyn Umeh   What you need to know about your machine:   PARTS OF SEWING MACHINES AND THEIR FUNCTIONS:   The basic parts of a sewing are listed below and as seen in the picture sent above.  Parts of a Sewing Machine   1. Spool pin: It is fitted on top of the arm to hold the reel.   2. Thread guide: It holds the thread in position from the spool to the needle.   3. Tension disc: The two concave discs put together with the convex sides facing each other. The thread passes between the two. The tension of the thread is adjusted by a spring and nut which increases or decreases pressure      4. Take up lever: It is a lever fitted to the body of the arm. Its up and down motion feeds the thread to the needle and tightens the loop formed by the shuttle.   5. Needle bar: This is a steel rod to hold the needle at one end with the help of a clamp. Its main function is to give motion to the needle.   6. Bobbin case: This moves into position to catch the top thread and form the sti...