S-4000 BH Omron
1-43
Released 05/2010
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E - MACHINE ADJUSTMENTS
1 3. THREAD DRAW-OFF
1 .
T h e a d j u s t m e n t o f t h e D r a w - O f f L e v e r Po s it io n
The correct adjustment ensures a long enough thread tail for starting the sewing of the next
buttonhole. Remove the covers because this mechanism adjustment is performed in the rear of the
machine head. The air supply is necessary for this adjustment.
a)
loosen the screw
➏
b)
the piston
➐
of the cylinder
➑
is in the home position (retracted). Move the lever
Ò
to the pin
➓
with minimal clearance 0.1 mm. Tighten the screw
➏
c)
check the correct adjustment by switching the valve
of the draw-off cylinder (YV1)
2.
S e t t in g t h e t h r e a d t a i l l e n g t h
If the missing stitches appear at the beginning of the sewing or the buttonhole is not sewn, follow the
below mentioned steps:
a)
loosen the screw
➊
.
b)
turn the draw-off lever
➋
counter clockwise to increase the thread tail length; turn the draw-off
lever clockwise to decrease the thread tail length
3 .
L o c k in g t h e s t it c h e s
If the skipped stitches problem occurs during sewing, follow the below mentioned steps:
a)
loosen the screw
➌
b)
move the thread take-up
➍
down to increase the size of the needle loop.
Содержание S-4000 BH Omron
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