23
CZ8000
6.6.3 Distance between needle and lower looper
6.6.2 Installing angle of lower looper
The standard installation angle of lower looper ① is value
A in Table 9 .
Make adjustment by loosening the screw ② to make the
height difference between the rear and the tip of the lower
looper to value B in Table 9. (Fig. 6-14)
Fig. 6-14
Fig. 6-15
Rotate the machine pulley clockwise and move the lower
looper ① to the extreme left. Make the distance between
the lower looper tip and the center of the needle to 3.3 -
3.8 mm.
Loosen the screw ③ on the lower looper holder to adjust
it.
1. Tighten the screw ④ with a tightening torque of 1.5
N・m.
2. Check the parallel setting of the needles for 2-needle
machine. (See“6.6.5 Parallel of needles”)
3. Apply the liquid packing to the thread of the screw
when tightening it.
Table 8
6.Adjustments of sewing machine
Table 9
A
B
①
CZ8003
single needle
CZ8020
2-needle
Fig. 6-13-1
Fig. 6-13-2
N
N
3.3 - 3.8㎜
3.3 - 3.8㎜
①
③
②
ATTENTION
Model
Height of
Needle
“N” ( ㎜ )
Fig.
No.
CZ8003 (1-needle)
10.0 - 10.3
6-13-1
CZ8020 (2-needle)
10.0 - 10.3
6-13-2
Model
A
B
2-needle overlock machines
(CZ8020)
2 - 4 °
0.5 - 1.5 ㎜
1-needle overlock machines
(CZ8003)
2 - 3 °
0.5 - 1.0 ㎜