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Inspection and
Adjustment
Inspection and
Adjustment
Adjustment Thread presser base up/down position
[Standard]
The clearance between the thread presser base upper assy and the wiper hook should be more than 0.2 mm for all
needle positions.
[Adjustment]
1. Loosen the 4 screws 1 of the thread presser base assembly.
2. When turn off the power, lower the wiper link assy of the left side of the arm bed by hand and lower the wiper
hook.
*Key point
• If turn on the power, the wiper link assy does not lower.
3. Move the thread presser set up and down, and adjust the clearance between the thread presser base upper assy and
the wiper hook.
4. Tighten the 4 screws 1 of the thread presser base assembly to secure the needle bar case final assembly.
5. Repeat the same step 2 to adjust the clearance between the thread presser base upper assy and the wiper hook for
all needle bar position.
1
Screw, Bind
M4X6
1
Wiper hook
Thread presser
base upper assy
more than 0.2 mm
Needle bar case final assembly
Wiper link assy
Wiper link assy
Wiper hook
Thread
presser base
upper assy
Thread presser base assembly
1
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