51
ENGLISH
WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of
the sewing machine.
(8) Installing position of the needle thread trimming knife
■
S and R type (long thread trimming)
1) The clearance between needle thread trimming
knife J
and the needle is approximately 1 mm.
Loosen setscrew
and move needle thread triming
knife J
to adjust the clearance.
2) Loosen nut
, move needle thread trimming
adjusting base
up and down, and adjust
clearance “B” between the needle thread trimming
knife J and spreader, right
to 0.1 to 0.2 mm to
obtain the height of needle thread trimming knife J
.
When needle thread trimming knife J
comes in contact with spreader, right
,
breakage of components will be caused.
3) The initial position of needle thread trimming
knife J
is the position where it protrudes 3.2
mm from throat plate
. Loosen adjustment nut
and adjust the initial position with adjustment
screw
.
4) The operating position of needle thread trimming
knife J
is the position where needle thread
trimming knife J
comes out by 1.2 to 1.5 mm
from throat plate
when needle thread trimming
actuating arm
is moved counterclockwise
and stopper B
of the needle thread trimming
actuating arm comes in confact with the top
surface of the looper bracket.
When the adjustment is necessary, loosen the
stopper B
and set the protruding amount to 1
to 1.2 mm.
Stopper B
of the needle thread trimming
actuating arm has double screws.
14050009
(Right blade type)
Approx. 1 mm
B
1.2 to 1.5 mm
(Reference)
1 to
1.2 mm
In case of using Part No. 14050009, refer to
the Engineer’s Manual.
Approx. 3.2 mm
■
T type (short thread trimming without gimp)
Perform the adjustment of the aforementioned steps
1) to 4) with the left looper (eye looper) instead of
right spreader
.
When the clearance of 1 mm provided
between the top end of needle thread
trimming knife J
and the needle (edge
of the left looper) is smaller, the knife cuts
even the looper thread and the looper
thread cannot be retained. When such
phenomenon as this occurs, adjust the
clearance of 1 mm to rather large.
To Next Page
Loading...
Need help?
General
