JUKI LK-1900AN Engineer's Manual page 59

Procedures of assembling and adjustment procedures
1. Push the needle thread clamp device 3 in the direction of A and fix it with the four set screws 2 .
Tighten the hinge screw 1 .
2. Turn on the power supply and press the
plate complete 4 is positioned at the far advanced end.
Confirm that the distance between the needle thread clamp support plate complete 4 and the needle
5 is 3.3 to 3.7 mm and 1.7 to 2.3 mm, respectively.
3. If the distance seems to be inadequate, loosen the four set screws 2 and move the needle thread
clamp device 3 for adjustment.
(Caution) For the prevention of injury, the distance should be checked only if the sewing LED is
unlit. (Press the
4. After the completion of the above-mentioned reassembly, make adjustments according to "(37) Ad-
justing the needle thread clamp sensor."
key twice so that the needle thread clamp support
key twice after the power supply has been turned on.)
3.3 to 3.7 mm
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