– 6 –
(3) Adjusting the lower 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) Returning amount of the lower looper
F
: The distance between the blade point of the lower looper
❸
and the center of the needle
❹
should be
as follows when the lower looper
❸
is at the extreme left of its stroke.
F
❶
❸
❹
❷
F
❶
❸
❹
❷
(Unit : mm)
Model
F
1-needle overlock machine MO-6804S
3.7-3.9
2-needle overlock machine
MO-6814S-2 H
MO-6814S-3 H
MO-6814S-4 H 4.1-4.3
MO-6814S-30P 3.7-3.9
Safety stitch machine
MO-6816S-3 H
MO-6816S-50H 4.1-4.3
MO-6816S-60H
MO-6816S-30P 3.7-3.9
(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 sewing
products and thread to be used.
2) Clearance between the lower looper and the needle
When the lower looper
❸
moves to the right toward the center line of the needle
❹
, the clearance be-
tween the blade point of the lower looper
❸
and the scarf of the needle
❹
should be 0.01 to 0.1 mm.
0.01 to 0.1mm
❸
❹
❸
❸
❹
❹
❶
❶
❺
❺
❷
❷
