JUKI LK-1920 - Adjustment of the Bobbin Thread Winder Components

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27
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(1) Adjusting the bobbin winder thread tension
1) If the winding amount of the bobbin thread
is excessive, loosen setscrew
❶
, and move
bobbin thread winder lever
❷
in the direction
A
. Then x it.
2) If the winding amount of the bobbin thread is
small, loosen setscrew
❶
, and move bobbin
thread winder lever
❷
in the direction
B
. Then
x it.
5-9. Adjustment of the bobbin thread winder components
1) Loosen nut
❶
, and adjust the height so
that the clearance between the bobbin
thread guide and the top cover should be
approximately 5 mm.
2) If the bobbin thread is wound like
A
, the
height should be higher than 5 mm. If it is
like
B
, the height should be lower than 5
mm.
A
B
A
B
5 mm
Bobbin thread guide
Top cover
Bobbin thread
Bobbin
❶
A
B
❶
❷
(2) Adjusting the winding amount of the bobbin thread