– 10 –
(5) Positioning the upper looper
WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.
Standard adjustment
1) The relationship between the needle and the upper looper
E
: The distance between the blade point of the upper looper
❸
and the center of the needle
❹
should be
as follows when the upper looper
❸
is at the extreme left of its travel.
Throat plate
D
E
❸
❹
Throat plate
D
E
❸
❹
❸
❷
❶
❹
(Unit : mm)
Model
D
E
1-needle overlock machine MO-6804S
(10.8) 4.8-5.2
2-needle overlock machine
MO-6814S-2 H (10.5)
5.4-5.7
MO-6814S-3 H
MO-6814S-4 H
(12)
MO-6814S-30P
(10.5)
Safety stitch machine
MO-6816S-3 H (10.8) 4.8-5.2
MO-6816S-50H
(12)
MO-6816S-60H (12.7)
5-5.5
MO-6816S-30P
(10.8) 4.8-5.2
(Caution) The dimensions given in the table are standard
ones to be used to adjust the looper. They are
intended to be used for reference and should be
changed more or less in accordance with the sew-
ing products and thread to be used.
2) The relationship between the upper looper and the lower looper
The clearance between the upper looper
❸
and lower looper
❺
should be 0.05 to 0.2 mm when they
cross with each other.
❸
❺
0.05 to 0.2mm
❸
❺
❷
❶
❸
