–
9
–
9. Stitch dial
Preparation
™
Remove arm cover asm.
10. Thread trimming switch case
Preparation
™
Remove arm cover asm.
™
Remove motor cover and belt cover.
™
Remove motor mas. asm.
1
Thread trimming switch
circuit board case setscrew
SL4040655SN
11. Wire holder
Preparation
™
Remove outer components.
(Excluding belt cover and
motor cover)
™
Remove presser bar.
3
Feed regulating screw
stopper asm. setscrew
5
Feed regulating screw
• Stopper screw
• Stopper nut
Disassembly
™
Loosen two
1
setscrews and re-
move the dial.
™
Be careful since
2
pin jumps.
™
3
may not be removed.
(Stopper screw SM8031400TP)
Assembly
™
Turn regulating
4
screw full to
the right.
™
Assemble stitch dial with its scale
0 up and tig hten
1
sc rew (2
pcs.).
Point
™
There should be no play in feed
regulator when operating lever.
(When scale is 0.)
™
Loosen
5
stopper nut. Make
stopper screw strike against regu-
lating
4
screw and tighten nut.
2
Feed regulating
pin
1
Stitch dial setscrew
SM8030402TP
4
Feed regulating screw
Disassembly
™
Remove two
1
setscrews in
thread trimming switch case.
™
Remove thread trimming switch
case.
Assembly
™
Attach the switch case to frame
and tighten with
1
setscrews.
Point
™
There should not be no torsion
between switch and frame.
1
Nut of setscrew
(opposite side 9 mm)
NS6620310SP
2
Wire tube presser setscrew
SM4040655SN
3
Wire holder setscrew
SM5040855SN
5
Disk pressure release
connecting link
4
Thread release plate
6
Thread release plate shaft