JUKI AC-172N-1790, Инструкция по эксплуатации

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When replacng the knfe wth a new one, perform as
follows.
1) Knfe
1
can be easly removed together wth the
washer when removng knfe retanng screw
2
.
2) Adjust so that the knfe, when lowered the knfe
bar by hand, s spaced 1 to 2 mm away from the
top surface of the throat plate as llustrated n the
sketch. Then, be sure to place the washer and
tghten the knfe retanng screw.
(6) Installing the knife
(5) Installation of bobbin case
1) Lft up and hold bobbn case latch lever between
two fingers.
2) Push the bobbn case nto the hook so that t s
supported by the hook shaft
1
and then snap n
the latch lever.
Press the bobbn case untl the predetermned
poston s reached, and t wll clck.
1. If the bobbin case is out of the pre -
determined position, it can jump out
from the hook to cause the needle
thread to tangle on the hook shaft.
Check to be sure that the bobbin case
is properly installed in the correct po -
sition.
2. There is a difference in the shape of
bobbin case between the standard
hook and the dry one. They have noth -
ing in common with each other.
WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the
following work after turning the power off and ascertaining that the motor is at rest.
Inch
/
mm CONVERSION TABLE
In case the cloth cuttng knfe on hand s ndcated
n nch, set the length of cloth cuttng (knfe sze) n
mm usng the nch
/
mm converson table on the
left sde.
Sewng data
s the length of cloth cuttng.
Refer to "
@
- 2-7. Changing sewing data" p.63 .
Knfe sze
1/4
3/8
7/16
1/2
9/16
5/8
11/16
3/4
13/16
7/8
1
1 1/8
1 1/4
Indcaton of mm
6.4
9.5
11.1
12.7
14.3
15.9
17.5
19.1
20.6
22.2
25.4
28.6
31.8
1
2
1
1 to 2 mm
WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the
following work after turning the power off and ascertaining that the motor is at rest.