THREADING BOBBIN CASE
Draw thread through slot in edge of bobbin case
as shown in Fig. 14, then to the left and under pro
jection as shown in Fig. 15, leaving about two inches
Fig. 14. Bobbin Threading (Step One)
Fig. T6* Needle Thread Tension
Fig. 17. Bobbin Thread.,|"e^sion
of thread above the slide to start sewing. Close slide,
leaving just enough space for thread to pass freely.
DRAW THREAD TO LEFT
AND UNDER PROJECTION
DRAW THREAD UP
AND OUT TWO INCHES
Fig. 15. Bobbin Threading (Step Two)
Tension on thread should be as light as possible
yet sufficient to correctly set stitches in material.
NEEDLE THREAD TENSION
Regulate needle thread tension only when presser
foot is down. To increase tension, turn thumb nut
shown in Fig. 16, clockwise. To decrease tension
turn this thumb nut counterclockwise.
BOBBIN THREAD TENSION
Bobbin thread tension is regulated by the screw
nearest to the center of tension spring on the outside
of the bobbin case shown in Fig. 17. Turn machine
pulley slowly until screw is accessible. To increase
tension, turn screw inward. To decrease tension,
turn screw outward.
The thread controller should draw up slock thread
before needle point enters fabric to prevent needle
from penetrating thread.
From the library of: Superior Sewing Machine & Supply LLC