Brother BAS-311G - Description of Connectors; Connector Positions

7. ADJUSTMENT
BAS-311G, BAS-326G
90
7-2-2. Thread take-up spring
<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.
7-2-3. 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
Weaker
Stronger
5030
Q
More thread
Less thread
Index mark
5023Q
4664Q