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IV. EXPLANATION OF THE LK-1903B, COMPUTER-CONTROLLED
HIGH-SPEED LOCKSTITCH BUTTON SEWING MACHINE
1. SPECIFICATIONS
Different specications from those of the LK-1900B only are described.
2-1. Installation of the sewing machine and preparation of the operation
1) Installation of the sewing machine head and the
control box is the same as that of the LK-1900B.
Refer to the instruction manual for the LK-1900B.
2) Install a set of the button tray base to a convenient
place for the work as the set is included in the ac-
cessories.
3) The way of operation is the same as that of the
LK-1900B.
Set of button
tray base
2-2. Needle and thread
Needle and thread will vary in accordance with the
sewing conditions. When using the needle and the
thread, select them referring to the left table. Cotton
thread and polyester spun thread are recommend-
ed.
Needle Needle thread
#60
#60
#50
#40
Bobbin thread
#80
#60
#60
#60
DPx17 #14
DANGER :
Be sure to perform the work with two persons or more when moving the sewing machine.
1 Max. sewing speed 2,700 sti/min
2 Needle DPx17 #14
3 Lift of the work clamp foot Max. 13mm
4 Number of standard patterns 50 patterns
* The needle thread clamp device is set to prohibition (state of standard delivery) with memory
switch U035. Refer to
"I.5-8. Thread clamp device" p.23
.
2. PREPARATION OF THE SEWING MACHINE
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