Adjustment Procedure
Results of Improper Adjustment
9) Adjustment of the driven part stopper
[Method of replacement]
1. Let the sewing machine fall down.
2. Remove the needle, hook, and the inner hook presser.
3. Remove the moving knife link stepped screw
❹
.
* Apply the LOCKTITE 243 on a screw at the time of recombination.
4. Remove the C ring
❺
.
5. Remove the female unit
❶
from the metal.
10) Installed length of the thread trimmer connector
bar (asm.)
1. Install two rod ends
❽
so that they cross each other at right angles.
Then, fix then with the nuts
❼
.
2. In order to avoid loosening by mistake at the time of shipment,
“white paint” is applied to the nuts
❼
.
3. Loosen the nuts
❼
when removing the thread trimmer connector
bar (asm.) (40086708) without drawing out the lower shaft. When
the nuts are loosened, the respective subsidiary parts are disas-
sembled and the thread trimmer connector bar can be taken out.
4. After disassembly, reassemble the parts so that the standard adjust-
ing values can be secured.
◦ If the two rod ends
❻
are not
crossed at right angles, the ob-
tained torque is the value for thread
trimming.
◦ If the center-to-center distance
(99.5±0.4mm) deviates from the
standard value, the initial position
of the moving knife is changed and
this can be a cause of thread trim-
ming failure.
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