JUKI Sewing Machine - OTHERS; Sewing Troubles and Corrective Measures

–
173
–
3
6
4
9
8
!0
!2
!1
7
1
2
5
(1) When making equal the amount of alternate vertical movement of walking foot
and presser foot (When making the amount equal to 1.5 mm)
1) Bring the needle bar to its lower dead point.
2) Turn presser lever
1
, raise walking foot
2
, and
insert "thickness gauge" of 1.6 to 1.7 mm or the
like between the top feed belt and the bottom
feed belt.
6) Turn presser lever
1
and remove the thickness
gauge which has been inserted in step 2).
In case of 1.5 mm, thickness of 1.6 to
1.7 mm is settled since the compressed
amount of belt slightly varies due to the
presser pressure.
3) Remove stopper plug
3
.
4) Insert a hexagonal wrench key from hole A, and
loosen top feed arm clamp screw
4
.
5) Tighten clamp screw
4
after checking that
presser foot
5
has come down.
(2) When making 2.5 mm the amount of alternate vertical movement
(When the amount is already made equal to 1.5 mm, perform from item 1) below. When the amount
is not made equal to 1.5 mm, Perform rst "(1) When making equal the amount of alternate vertical
movement" of the aforementioned item.
1) Turn top feed arm cover
8
.
2) Loosen stopper screw
9
and remove the stopper.
3) Loosen top feed hinge screw
!0
.
4) Turn cam rod
!1
, adjust the position to the engraved marker line on top feed arm
!2
, and tighten hinge
screw
!0
.
1. Remove the thrust of top feed arm
6
and drive shaft arm
7
.
2. Set the tightening torque to 5.8N•m
(60Kgf • cm).
When turning the cam rod and bringing the top feed arm to its top end, the amount of
alternate vertical movement becomes 3.5 mm.
WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.
A