Always use a metal bobbin, or the magnetized bobbin case will not be able to function properly, resulting in a lack of tension on the bobbin thread.
Turn the handwheel counter-clockwise
until the needle is in its highest position
. Raise the presser foot lifter. Pull the slide plate forward and remove the empty bobbin.
Place the filled bobbin into the bobbin case, and pull about 4" of thread from the new bobbin. Make sure that the bobbin turns clockwise
when the thread is pulled, or you will not have correct tension when you begin to sew.
Hold the needle thread loosely with your left hand. Turn the handwheel toward you, first lowering
the needle, and continuing to turn
the handwheel until the needle comes to its highest position
Lightly pull up the needle thread
and pick up the bobbin thread which will appear through the needle plate slot
. Then pull both threads to the back of the machine leaving a 4" thread tail. Push slide plate back in.
Hope this helps. -samson39