JUKI LK-1900A Instruction Manual page 79

(2) Adjusting the height of the needle bar
WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.
q
w
1) Loosen needle bar connection screw q and move the needle bar w up or down so that second engraved
marker line A as counted from the bottom is aligned with the bottom end of needlebar bushing e when
turning the hand pulley to bring the needle bar to its lowest position. Then further raise only the needle
bar by 4.3mm, and tighten needle bar connection screw q.
2) Attach the needle (TQx3 #14).
(3) Adjusting the feed plate base
WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.
Adjust so that the slot of feed plate q becomes the center of the boss section of the needle hole guide, and
tighten setscrew w.
When the sewing state between the button and the material is loose, replace feed plate q
with the feed plate B to obtain a stronger sewing state. At this time, however, the outside
diameter of the button is limited to max. ø19. So, be careful.
Center
73
e
A
w
q
4.3mm