10. STANDARD ADJUSTMENTS
22
DA-9280
10-6. Tension release lever adjustment
Adjust so that the center of the tension release lever (1) thread
hole is 7 - 9 mm above the center of the thread hole in the upper
thread tension bracket (2) when the needle bar is at its lowest
position.
1. Turn the machine pulley until the needle bar is down at the
lowest position.
2. Loosen the screw (3) and then move the tension release
lever (1) up or down to adjust so that the center of the
tension release lever (1) thread hole is 7 - 9 mm above the
center of the thread hole in the upper thread tension bracket
(2).
3. Retighten the screw (3).
* The higher the tension release lever (1), the tighter will
be the stitches.
10-7. Upper thread take-up guide adjustment
Adjust the distance between the center of the upper thread
take-up hole (1) and the top of the upper thread take-up guide
(2) will be 6 - 7 mm.
1. Turn the machine pulley toward yourself until the needle bar
is down at the lowest position.
2. Loosen the screw (3), and then move the upper thread
take-up guide (2) up or down to adjust so that the distance
from the top of the upper thread take-up guide (2) to the
center of the upper thread take-up hole (1) is 6 - 7 mm.
* The higher the upper thread take-up guide (2) positions,
the greater the upper thread loops will be.
3. Tighten the screw (3).
10-8. Upper thread nipper adjustment
Adjust so that the maximum clearance between the upper
thread tension bracket (1) and the lower thread tension plate (2)
is 0.5 - 0.7 mm (for two needles) or 0.8 - 1.0 mm (for three
needles).
Loosen the set screw (3), and then move the upper thread
tension bracket (1) in or out to adjust so that the maximum
clearance between the upper thread tension bracket (1) and the
lower thread tension plate (2) is 0.5 - 0.7 mm (for two needles)
or 0.8 - 1.0 mm (for three needles).
* The thread tension will become better if the clearance
between the upper thread tension bracket (1) and the lower
thread tension plate (2) is reduced.
1530B
1529B
1528B
1531B
Upper thread
cam
0.5 - 0.7mm (for two needles)
0.8 - 1.0mm (for three needles)
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