JUKI LK-1900S-SS Instruction Manual page 89

(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.
❶
❷
1) Loosen needle bar connection screw ❶ and move the needle bar ❷ up or down so that second en-
graved marker line A as counted from the bottom is aligned with the bottom end of needlebar bushing
❸ 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 ❶ .
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 ❶ becomes the center of the boss section of the needle hole guide,
and tighten setscrew ❷ .
When the sewing state between the button and the material is loose, replace feed plate ❶ 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
－
87
❸
A
❶
－
4.3mm
❷