To Replace the Bobbin Case

After threading, take the bobbin case by the latch, holding it between the thumb and forefinger

Fig. 11. Bobbin Case Threaded and Replaced

of the left hand.  Place the bobbin case on the center stud (A, Fig. 11) of the bobbin case base with the thread drawing from the top of the bobbin case.
Release the latch and press the bobbin case back until the latch catches the groove near the end of the stud.  Allow about three inches of thread to hang free from the bobbin case and turn down the bed extension.

CAUTION -- In case the throat plate is removed for cleaning the stitch-forming mechanism, etc., make certain, when replacing the throat plate, that the position finger (A2, Fig. 11) of the bobbin case base enters the notch (B2, Fig. 11) of the position plate attached to the underside of the throat plate.

To Set the Needle

Turn the balance wheel over toward you until the needle bar is at its highest position, and loosen the thumb screw (A Fig. 12) in the needle clamp.

Fig. 12. Positioning of Needle in Needle Clamp

Have the flat side of the shank of the needle toward the left as shown above and put the needle up into the clamp as far as it will go. Then tighten the thumb screw.