Adjusting The Height Of The Feeding Frame; Adjusting The Rising Amount Of The Thread Tension Disk - JUKI LK-1941 Manuel D'utilisation

3. Adjusting the height of the feeding frame

WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.
A
B
1
3

4. Adjusting the rising amount of the thread tension disk

WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.
Widen
Narrow
1
2
4
G and Z types
Auxiliavy
thread
tension
H type
Thread tension No.2
2
5
3
Thread guide wheel
6
Thread tension No.2
1) Loosen setscrew 2 located in feed bracket 1.
Move cloth presser hook 3 in the direction B to
increase the height.
2) After adjusting the height, securely tighten
setscrews 2.
1) Remove the top cover. Make sure that tension
release pin 3 rides on tension release notch 4.
2) If the pin does not ride on the notch, push cam
follower 5 by hand to the e direction, and rotate
the main shaft in the correct direction to make a
state as illustrated in the figure.
3) Under the state as illustrated in the figure, loosen
setscrew 2 in the tension release adjusting arm.
By moving tension release adjusting arm 1 to the
left or right the rising amount of the thread tension
disk will change.
H type : Adjust the rising amount of the thread
tension No. 2 to 0.8 to 1.0 mm.
G and Z types : Adjust the rising amount of the
auxiliary thread tension so that the
thread guide wheel is lightly
turned by hand.
4) For the G and Z types, further, adjust the rising
amount of the thread tension No. 2. Loosen nut 6
and turn clockwise the whole thread tension to
increase the amount and counterclockwise to
decrease the amount. Adjust the rising amount to
1.0 mm to 1.2 mm.
If the rising amount is insufficient, the
length of the remaining thread after
thread trimming will be not stable. If the
rising amount is excessive, after
releasing the rising of the thread tension
disk, the disk closing will be defective.
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