Procedures
8 Turn the pulley until under looper to the left mostly,
and then temporarily fasten movable needle guard
e
to under looper holder
0.
9 Match the under looper point with the needle center
on the needle's upward travel, move movable needle
guard
e until it contacts needle, adjust the clearance
between the under looper point and needle to
0 to
0.05mm, and fasten movable needle guard
8.
* 0.02 to 0.05mm for cotton fabrics; 0
to
0.03mm
for chemical fabrics.
131
OVER
LOOPER
MECHANISM
Q'ty
of
screw
2
Procedures
Q'ty
of
screw
1 Fit over looper holder guide assembly
0 onto flame e and over looper driving lever 8 onto over
looper lever shaft
e at the same time.
2 Temporarily fasten over looper holder guide assembly
0.
3
3
Move
the over looper driving lever
f}
up
or
down until there
is
the least resistance
so
over looper
driving lever
•
is
in alignment with over looper lever shaft e' and then temporarily fasten it.
(Tum the pulley,
make sure that the machine smoothly.)
~
4 Insert over looper • all the way into over looper holder 8 , and temporarily fasten it.
(Tum the pulley in order
to
make sure that the machine runs smoothly. )
5 Install needle plate. 2
6
Select the correct distance A and B from the table below according to your machine specifications,
make an adjustment by moving the over looper holder guide assembly
0
to
the right or left, (decide
A measurement),
by
moving over looper driving lever
f}
to up or down (decide B measurement), and
then fasten them securely.
* When changing your machine from the standard specifications to the high-lift specifications, replace
over looper and over looper holder assembly, and make an adjustment.
(Unit: mm)
~
Single needle
Twin needles
Twin needles
Safety stitch
(four threads)
(mock safety)
Standard
High-lift
Standard High-lift
Standard
High-lift
Standard High-lift
e
A
7.2 8.2
7.2
8.2 7.2
8.2 7.2
8.2
B
5.6
5.6
5.6
5.6 5.6
5.6 5
5
.
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