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Adjustment Procedures
1. Turn the pulley until the needle bar
2. Loosen the needle bar connection screw
3. Based on the upper engraved marker line of the needle bar lower
dead point, tighten the needle bar connection screw
4. The needle
shall be positioned in the center of the throat plate
hole.
Adjustment Procedures
1. When the motor shaft
makes a rocking motion by the effect of the eccentric cam
2. Turn the power OFF, rotate the motor shaft
needle makes a uniform rocking motion in the oblong hole of the
throat plate
.
3. If the needle motion is not uniform, insert a tool from the hole on the
top surface of machine arm and loosen the needle bar rocking arm
setscrew
for adjustments.
4. In the case of eccentricity to the left, confirm whether the sensor slit
is located in the edge position of the sensor
5. In the case of deflection, loosen the sensor slit setscrew
sensor setscrew
* For fine adjustments, use of the sensor setscrew
6. After the power is ON, the needle
throat plate hole.
To make sure, examine [(11) Needle and Hook Timing Adjustments
and (12) Needle and Hook Clearance Adjustments] (Hook
Adjustment).
comes to the lower dead point.
is rotated, the needle bar rocking link
for adjustments.
comes in the center of the
.
.
.
, and confirm that the
.
or the
is adequate.
– 6 –
Results of Improper Adjustment
Results of Improper Adjustment
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