Installing Position Of The Needle Thread Trimming Knife - JUKI MEB-3200 Instruction Manual

(8) Installing position of the needle thread trimming knife

WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of
the sewing machine.
1.2 to 1.5 mm Approx. 3.2 mm
(Reference)
Approx. 1 mm
14050009
(Right blade type)
■ 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
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
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.
In case of using Part No. 14050009, refer to
the Engineer's Manual.
■ 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
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 0.1 to 0.2 mm to
,
. Loosen adjustment nut
and the needle (edge
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