JUKI MB-1373, Instruction Manual

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(5) Attachment for metal buttons (Z038)
(INSTALLATION)
Remove both the button clamp mechanism assem-
bly and the feed plate from the machine and install
attachment
1
in place. Loosen screws
3
and adjust
button clamp bracket
4
to permit the needle to
come down in the middle of the needle slot in metal
button adaptor
2
. Attach button clamp feed plate
5
using screws
7
in the way that it permits the needle
to come down in the middle of the needle slot in feed
plate
6
. Insert the top end of button clamp stud
8
into an opening in the jaw of the machine arm and
fasten it by screw
9
.
(ADJUSTMENT AND OPERATION)
1) Loosen screw
!0
, let feed plate
6
recede 1.0 to 1.5 mm from the left end of button clamp jaw lever
2
and retighten screw
!0
.
2) Set a button in place, loosen screws
!1
and
!2
and align metal button holding clamp
!3
with the center of
the button.
3) Metal button holding clamp
!3
must give proper pressure to the button so that the button stays steadily
in position while being sewn. Loosen a setscrew in thrust collar
!4
and rotate the thrust collar until metal
button holding clamp
!3
provides proper pressure.
4) You may fix button clamp block
!5
in a convenient position for operation.
1. When you fix the thrust collar, ensure that button clamp rotating shaft
!6
does not play axially in its
bracket.
2. Adjust lifting hook
!9
and stopper pin
!8
so that L-shaped liting rod roller
!7
does not come in
contact with button clamp bracket
4
.
4-4. Motor pulley and belt
1) For this machine a single-phase or 3-phase 200 watts (1/4 HP) induction motor is used.
2) Use a V belt.
3) The sewing speed depends on the diameter of the motor pulley as listed below ;
★
The pulley of 50Hz and 1,300 rpm is in common with that of 60Hz and 1,500 rpm.
★ The rotating direction of motor is counterclockwise when viewed from the motor pulley side.
Be careful not to rotate in reverse direction.
★ When replacing the motor pulley and changing the sewing speed from 1,300 rpm to 1,500 rpm and vice
versa, be sure to re-adjust the position of the stop-motion. (Refer to "3-1
4
. Adjusting the position of the
stop-motion", p.8 .)
Hz rpm Motor pulley part No.
50
1500 40038291 ø 76
1300 40038298 ø 64.5
60
1500 40038298 ø 64.5
1300 40042229 ø 57
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.
1
2
5
4
3
7
8
9
!0
!1
!2
!3
!4
!5
!8
!9
6
!6
!7