4. LOWER LOOPER ADJUSTMENT
5. NEEDLE GUARDS ADJUSTMENT
Looper arm
screw for
adjusting position
a) Replacement of lower looper
Slide the pipe rubber, and loosen the screw.
Replace new lower looper, and slightly tighten the screw.
Adjust the radius 55.9mm 0.1, and firmly tighten the screw.
Replace the pipe rubber.
b) Lower looper position
Turn the handwheel, and bring lower looper to
the far left.
Loosen looper arm screw, and adjust lower looper
to the correct position.
You are required to check the distance of tip of
lower looper and needle.
c) Distance between lower looper and needle
Turn the handwheel, and bring tip of lower looper to
the center of left (right) needle.
Loosen looper arm screw, and adjust lower looper
to the correct position.
Lower looper
fixing screw
Right
Needle
Lower looper
position
55
.9
m
m
+
0.2
+
#14(#90)Needle
4.8 mm
+0.2
0
+0.2
0
d) Rear needle guard position
Loosen rear needle guard screw ,and adjust rear needle
guard to the correct position.
e) Adjusting overlock needle guards
Rear needle guard can be adjusted
by bending.
Loosen front needle guard screw,
and adjust front needle guard to
the correct position.
1.3mm
Rear
needle guard
NOTE: After adjusting loower looper, you are required to
check JET AIR THREADING.
0
1.9mm
left,right
needle
screw
0
0
0
0
1.9
+0.2 0
0
1.9
+0.2 0
Overlock
Needle
Chain
Needle
0-0.02
4
0.1
