Adjustment Of The Wiper Spring; Installing The Save Button Bar (Accessory Part) - JUKI LK-1903A-305 Instruction Manual

10. Adjustment of the wiper spring
WARNING :
Turn ��� the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.
2
1
11. Installing the save button bar (accessory part)
WARNING :
Turn ��� the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.
2
4
3
3.5 to 4mm
Wper sprng 1 retans the needle thread after
thread trmmng n between wper 2 and the wper
sprng. Correct properly the tenson of wper sprng
1 so that the tenson at that tme becomes 0.2 to
0.3N (a lttle hgher tenson than that of the bobbn
thread comng out of the bobbn case).
) Install save button bar 3 on button clamp base
1
2) Adjust so that a clearance of 3.5 to 4 mm s
3) To adjust the rasng amount of the save button
70
－ －
If the retaining of the needle thread is
excessive� the thread may protrude
from the upper side of the button.
1 wth hexagon screw 2 .
provded between the center of the button and
the top end of the save button bar.
bar, loosen screw 4 , and move the save button
bar up or down.