18
CZ8000
6.Adjustments of sewing machine
6.3 Width of overedge seam
Before adjustment, set the edge of the upper knife ① 0 -
0.5 ㎜ above the lower knife ②.
To make wide overedge seam:
(1) Loosen the screw ③ on the upper knife holder ⑤.
(2) Tighten the screw ③ securely after moving the holder
⑤ as desired in the direction “W”.
(3) Loosen the screw ④ on the lower knife holder ⑥.
(4) The lower knife ② touches the upper knife ① closely
with its spring.
(5) Tighten the screw ④ securely.
To make narrow overedge seam:
(1) Loosen the screw ④.
(2) Tighten the screw ④ slightly after moving the holder
⑥ as desired in the direction “N”.
(3) Loosen the screw ③.
(4) Tighten the screw ③ with applying the upper knife ①
to the lower knife ②.
(5) Loosen the screw ④.
(6) The lower knife ② touches the upper knife ① closely
with its spring.
(7) Tighten the screw ④ securely.
Fig. 6-4
Fig. 6-5
①
②
stitch plate
0 - 0.5㎜
1. After changing the width of overedge seam, check
the sharpness of the blades. (See“6.4.3 Sharpness of
knives”)
2. Use a stitch plate applicable to the width of overedge
seam.
Adjustable range of overedge seam is within ±0.5㎜
based on the value indicated the gauge respectively.
3. Dust clogged at the connecting part of the upper knife
holder changes the installing angle of the knives. It
will make them cut badly. Be sure to clean the parts
by loosening the screw ③.
③
①
②
④
Ｗ
Ｎ
⑥
⑤
ATTENTION
