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10. STANDARD ADJUSTMENTS
BAS-300G, BAS-311G, BAS-326G
56
10-2. Thread take-up spring
Specifications
Heavy-weight materials
(-01[])
Medium-weight materials
(-02[])
Seatbelt (-03[])
Thread take-up spring
height (mm)
7 − 10 2 − 4
Thread take-up spring
tension (N)
0.6 − 1.2 0.2 − 0.5 1.0 − 1.4
<Thread take-up spring height>
Loosen the set screw (1) and turn the adjuster to adjust.
<Thread take-up spring tension>
Turn the tension stud (2) with a screwdriver to adjust the
tension.
NOTE:
If the thread tension spring is not adjusted correctly, the upper thread trailing length will be uneven after thread trimming.
10-3. Arm thread guide R
The standard position of arm thread guide R (1) is when the
screw (2) is aligned with the index mark.
Loosen the screw (2) and move arm thread guide R (1) to
adjust.
* When sewing heavy material, move arm thread guide R
(1) to the left. (The thread take-up amount will become
greater.)
* When sewing light material, move arm thread guide R
(1) to the right. (The thread take-up amount will become
less.)
5022Q
Lower
Higher
2265B
5030
Q
Weaker
Stronger
More thread
Less thread
Index mark