Brother BAS-311A - Bobbin Case Installation and Threading; Thread Tension

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STEP BACK
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Fig. A
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Fig. 8
(3) Turn the power switch 8 on. (The power indicator
on
the operation panel will light.)
(4) Press and hold the step-back switch 8 on the
operation panel, and depress the starting pedal
G to start the sewing machine. Keep the start
switch depressed until the bobbin is fully wound.
(Release the step-back switch 8 when the sewing
machine starts.)
(5) The bobbin holder 0 will automatically return
when the bobbin is filled to capacity (approximately
80-90% of the bobbin diameter.)
(6) Release the starting pedal G·
(7) Remove the bobbin, and pull the bobbin in the
direction of the arrow to cut the thread on the
thread cutter 8.
(8) To wind more thread onto the bobbin, loosen set
screw 0 to move the bobbin holder 0 out.
If the bobbin thread is wound unevenly onto the bobbin,
loosen
nut 0, and turn thread tension stud 8 to adjust
so that
the thread is wound evenly.
?$E If the bobbin is wound as in Fig. A, turn the stud
clockwise;
if Fig. 8, turn the stud counterclockwise.
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From the library of: Superior Sewing Machine & Supply LLC