JUKI LK-1910 Engineer's Manual page 143

Adjustment Procedures
1) How to install
1 Fix disk-floating device 3 using attaching screw 1 and
washer 2.
2 Extend cord laterally and clamp two places of the cord on
the way to the rear motor cover with cord clamp 4 and
screw 5.
3 Fix the cord coming to the circuit board to the other cord
with the clip band supplied as accessory.
(Caution) Attaching screws 1 and 5 are different in length.
So, do not mistake. Length of attaching screw 1
is 9 mm, and that of screw 5 7 mm.
2) How to use
1 When performing jump feed, the disk floating device is
actuated and the needle thread tension is released.
™ In case of LK-1910 and LK-1920
If memory switch function (selection of basting) No. 27 is
set 0 → 1, pattern sewing data is read for jump feed and
curved point for sewing, and they are operated respectively.
™ In case of LK-1930
If memory switch function (setting of needle thread disk
floating control) No. 112 is set to "ON", the pattern inputted
using "sewing machine rotation" function is operated at the
time of sewing.
Results of Improper Adjustment
™ When adjusting the disk floating
amount, change the insertion of
claw by inclining the disk floating
device.
138
− −