Singer 9940 Instruction Manual page 20

The machine will sew in reverse (at low speed)
while the button is pressed. When released,
machine will sew forward.
Needle stop position will be changed up or down
by pressing this button.
The indicator lamp will turn on when the needle is
down position.
By pressing this button, the sewing speed will be
reduced to 1/2 and indicator lamp will turn on.
The presser foot is lifed up or down by this lever.
NOTE:
Machine will not start when the presser foot is
lifted. (Except for bobbin winding)
The fabric feed dogs project up through the needle
plate, directly below the presser foot. Their
function is to move the fabric being sewn. The
drop feed lever controls the fabric feed dogs.
For ordinary sewing, move the lever to the right.
This raises feed dogs to their highest position. For
most sewing, the lever should be in this position.
For darning or free motion embroidery or
whenever fabric is to be moved by hand, move the
lever to the left to lower the fabric feed dogs.
The pressure on the presser foot is determined by
the weight of fabric.
To increase the pressure, turn dial to 3.
To decrease the pressure, turn dial to 1.
For ordinary sewing, turn dial to 2.
By turning the hand wheel, the needle will raise or
lower. You should turn hand wheel toward you.
To open the top cover, lift up the left side of cover.
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20 2003.9.10, 8:31 PM