Adjustment Of The Wiper Spring; Installing The Save Button Bar (Accessory Part) - JUKI LK-1900A Instruction Manual

10. Adjustment of the wiper spring

WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.
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11. Installing the save button bar (accessory part)

WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.
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r
e
3.5 to 4mm
Wiper spring
trimming in between wiper
Correct properly the tension of wiper spring
the tension at that time becomes 20 to 30 g (a little
higher tension than that of the bobbin thread coming
out of the bobbin case).
1) Install save button bar
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2) Adjust so that a clearance of 3.5 to 4 mm is provided
3) To adjust the raising amount of the save button
70
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retains the needle thread after thread
If the retaining of the needle thread is
excessive, the thread may protrude from
the upper side of the button.
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with hexagon screw .
between the center of the button and the top end
of the save button bar.
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bar, loosen screw , and move the save button
bar up or down.
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and the wiper spring.
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so that
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on button clamp base