10. STANDARD ADJUSTMENTS
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DA-9280
21
10-4. Needle guard adjustment
Adjust so that the needle (2) is pushed by the needle guard (3)
and the clearance between the needle (2) and the looper (1) tip
is 0 - 0.05 mm when the actual stitch length has been set and
the looper (1) moves forward and meets the needle (2).
1. Set the actual stitch length. (Refer to “8-3. Adjusting the stitch
length”.)
2. Turn the machine pulley toward you by hand until the looper
(1) tip is aligned with the needle (2) center while the looper is
moving forward.
3. Loosen the set screw (4), and then move the needle guard
(3) up or down to adjust so that the distance between the
ridge line [A] of the needle guard (3) tip and the needle (2) tip
is 1 mm.
4. Tighten the set screw (4).
5. Loosen the set screw (5) and then move the needle guard
(3) to the left or right to adjust so that the needle (2) is
pushed by the needle guard (3) and the clearance between
the needle (2) and the looper (1) tip is 0 - 0.05 mm.
6. Tighten the set screw (5).
NOTE:
Be sure to adjust the needle guard (3) after changing the
stitch length. If you use the sewing machine without
adjusting the needle guard (3), skipped stitches may occur
or the looper tip may become broken.
10-5. Feed dog height adjustment
Make an adjustment so that the highest part of the feed dog (1)
will be 1.2 mm above the top surface of the needle plate (2)
when the feed dog (1) is at the highest position.
Adjust the height of the feed dog (1) by turning the feed bar
eccentric shaft (3).
Installing the Spacer (For the denim specifications)
If stitch irregularities develop in sewing very heavy materials,
adjust the sub-feed dog to the correct height by installing the
spacer (1).
1. Remove the two screws (3) and then remove the sub-feed
dog (2).
2. Place the spacer (1) under the sub-feed dog (2) and
retighten the two screws (3).
* The spacer (1) is in the parts box.
㊎᧼
1527B
1525B
1524B
1526B
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