Thread Take-Up Spring; Arm Thread Guide R - Brother BAS-341H Instruction Manual

Direct drive programmable electronic pattern sewer
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7. STANDARD ADJUSTMENTS

7-2. Thread take-up spring

NOTE:
If the thread tension spring (3) is not adjusted correctly, the upper thread trailing length will be uneven after thread
trimming.

7-3. Arm thread guide R

More thread
37
Higher
Lower
Stronger
Weaker
Less thread
Index mark
Thread take-up spring height
Thread take-up spring tension
<Thread take-up spring height>
Loosen the set screw (1) and turn the adjuster to adjust.
3495B
<Thread take-up spring tension>
3496B
1.
Press the upper thread slightly above the tension bracket
(2) with a finger to stop the thread spooling out.
2.
Pull the upper thread downward so that the thread
take-up spring (3) is extended to the same height as the
base of the thread guide arm (4), and then measure the
tension of the thread take-up spring (3).
3.
Use a screwdriver to turn the tension stud (5) in order to
adjust the tension of the thread take-up spring (3).
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 the arm thread guide R (1) to
adjust.
・ When sewing heavy-weight material, move the arm
thread guide R (1) to the left. (The thread take-up amount
will become greater.)
・ When sewing light-weight material, move the arm thread
guide R (1) to the right. (The thread take-up amount will
become smaller.
3497B
BAS-341H, BAS-342H
(mm)
(N)
7 - 10
0.6 - 1.2

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