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16. Installation of needle guards
[Checking items]
1 Needle guard
2 Needle
* Check that the clearance between the needle 2 and the front
needle guard 1 is 0 to 0.1 mm A when the needle bar is at the
lowest position of the stroke.
[How to perform adjustment]
○ Set the needle bar in its lowest position of the stroke.
○ Loosen the setscrews B of the front needle guard 1 .
○ Move the front needle guard 1 to perform adjustment.
○ Tighten the setscrews B .
17. Position of upper looper thread take-up
[Checking items]
1 Upper looper thread take-up
2 Setscrew
3 Looper cover hinge
* Check that the distance between the lower end of upper looper
thread take-up 1 and the top surface of looper cover hinge 3
is the dimension A (described below) when the upper looper is
at the lowest position of the stroke.
Dimension A
MO-114D 6.0 ± 0.5 mm
MO-104D 7.5 ± 0.5 mm
[How to perform adjustment]
○ Set the upper looper in its lowest position of the stroke.
○ Loosen the setscrew 2 .
○ Adjust the position of upper looper thread take-up 1 .
○ Tighten the setscrew 2 .
1
A
– 13 –
2
B
1
2
3
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