25
CZ8000
Model
Distance betweren needle
and upper looper "U"
CZ8000 class
4.7 - 6.2 ㎜
CZ8120 class
5.0 - 5.5 ㎜
6.Adjustments of sewing machine
6.6.7 Back and forth position of upper looper
6.6.6 Distance between needle and
upper looper
Rotate the machine pulley clockwise and move the upper
looper to the extreme left. Make the distance “U” be
-
tween the upper looper tip and the center of the needle
in Table 12.
(1) Remove the thread eyelet support, the looper thread
eyelet, and the looper holder cover.
(2) Loosen the screw ② of the upper looper bar crank
arm to adjust it.
The thick portion (around eye) of the upper looper closes
to the needle when the upper looper moves from the ex-
treme left to the right while rotating the machine pulley
clockwise. (On 2-needle machine, it closes to the right
needle.)
Loosen the screw ③ to make the clearance between the
back side of the upper looper ① and the needle to 0.05 -
0.1 mm.
Fig. 6-20
Fig. 6-19
Apply the liquid packing to the mounting part of the
frame when installing the looper holder cover.
If not applied, it can cause oil leakage.
Table 10
0.05 -
0.1㎜
③
①
①
U
①
②