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② Check the pressure of two knives.
Make sure that the thread trimmer knife does
not make strong contact against the thread
spreading knife in front of the centerpiece of
the thread spreading knife (read framed part).
③ Check the sharpness when the two threads are brought to each right and left side of the centerpiece of
the thread spreading knife.
If not sharp enough, perform the procedure ① and ② .
Trim the thread in the state where the thread
is brought to the left.
(How to measure the knife pressure)
Match the knives, and hook the a spring
balance to the knife base and pull the
threads while holding the knife units by
hand so that they do not move in the axial
direction.
Adjusting value
S type: 9.8N or less
H type: targeting 9.8N, 14N or less
Trim the thread in the state where the thread
is brought to the right.
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