– 29 –
• Move of the hook shaft saddle when replacing
the gauge
1) Loosen screws No. 2
4
of hook driving shaft
gears
3
.
2) Align the needle with the blade point of hook.
3) Slightly loosen screws No. 1
5
of hook
driving shaft gears
3
so that the screws
does not come off the at section of the hook
driving shaft.
Sewing machine with thread trimmer
•
Loosen setscrews
6
of connecting link (asm.)
9
.
6-6. Replacing the gauge
2
7
1
2
9
6
2
8
9
2
6
Drive arm pin
B
A
4) Loosen two setscrews
2
of hook shaft saddle
1
, and move the hook shaft saddle.
(At this time, the hook drive shaft gear moves as well, and needle-to-hook timing does not shift.)
5) Set the clearance between the needle and the blade point of hook to 0 to 0.05 mm.
6) Tighten two setscrews
2
of the hook shaft saddle.
7) Tighten from screws No. 1
5
at the position where hook driving shaft gear
3
comes in contact
with hook shaft saddle
1
. Then tighten screws No. 2.
Sewing machine with thread trimmer
• Make driving arms
7
and
8
come in contact with the driving arm pin in the directions of
A
and
B
respectively and tighten four setscrews
6
in connecting link (asm.)
9
.
Drive arm pin
WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the
following work after turning the power off and ascertaining that the motor is at rest.
3
3
5
4
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