JUKI DLN-6390, Instruction Manual, Page: 91 / 380

27
ENGLISH
1
2
3
9
8
!0
a
b
C
E
D
4
b
2
!0
!1
!2
6
5
B
5
7
) Remove setscrews
1
and remove throat plate
2
.
2) Remove cap
3
and put a screwdrver from hole
4
to
loosen three hook setscrews. Turn the handwheel n
the drecton where needle bar goes up, set gauge for
the heght of needle bar
5
suppled as accessores to
nstallng plane
6
of the throat plate as shown n the
figure, and adjust the position so that plane
B
(secton
B of engraved marker) of gauge for the heght of
needle bar
5
enters bottom end
7
of the needle bar.
3) In ths state, adjust blade pont
8
of hook
a
to the
center of needle
9
. Then adjust so that the clearance
provded between the needle and the hook s 0 to
0.06 mm (standard) and securely tghten three hook
setscrews.
(Tghtenng torque : 2 to 4 N·m)
＊ At ths tme, adjust nner hook
b
at the poston as
shown in the figure.
4) Install cap
3
and throat plate
2
, and securely tghten
setscrews
1
.
(Tghtenng torque : .5 to 3 N·m)
＊
Adjust the convex of bobbn case holder
!0
to the
concave of nner hook
b
when nstallng the throat
plate.
＊
Tghten setscrews
1
and nstall throat plate
2
whle
pushng throat plate
2
by hand n the drecton of
arrow mark
C
when nstallng throat plate
2
.
5) Adjust clearance
D
provded between the convex of
bobbn case holder and the concave of the nner hook
wth gauge
!2
suppled wth the sewng machne as
accessores. (Standard : 0.8 mm)
＊
Put gauge
!2
suppled as accessores n clearance
D
and tghten setscrew
!1
whle lghtly pushng bobbn
case holder
!0
n the drecton
E
.
(Tghtenng torque : .5 to 2.5 N·m)
＊ Check that the gauge
!2
can go n clearance
D
and
come out from t wth lght resstance.
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.
2. Installing position of the hook
0 to 0.06 mm