6
7. CHAIN LOOPER ADJUSTMENT
NOTE: After adjusting loower looper, you are required to
check JET AIR THREADING.
a) Chain Looper Position
b) Adjusting chain needle guards
0
0
0
0
1.9
+0.2 0
0
1.9
+0.2 0
Overlock
Needle
Overlock
Needle
Chain
Needle
Chain
Needle
0.02-0.15
0
n
a
g
r
O
4
1
/
0
9
F
C
5
0
7
x
L
E
R72.6
0
.
2
+0.1
0
n
a
g
r
O
4
1
/
0
9
F
C
5
0
7
x
L
E
C
3
e
l
d
e
e
N
+0.1
C
O
Chain needle take-up
Lowest position
Chain looper thread take-up position timing
Chain looper thread take-up hight position
2
+-
0.5
14.5
0 -0.5