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HE-800A
7. CORRECT USE
63
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. Thread take-up spring height
Loosen the set screw (1), and turn the entire thread
tension adjuster to adjust the thread take-up spring
height to between 4 - 6 mm in accordance with the
material to be sewn.
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. Thread take-up spring tension
Turn the thread tension stud (1) to adjust the thread
take-up spring tension to between approximately 0.1 -
0.2 N in accordance with the material to be sewn.
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. Adjusting arm thread guide
The standard position of arm thread guide (1) is when
the screw (2) is aligned with the index mark.
The standard position for the arm thread guide (3) is
when the clearance between it and the screw (4) is 0.5
mm as shown in the illustration.
3958Q
3959Q
Weaker
Stronger
3960Q
Index mark
0.5mm