Brother International S-7200B Instruction Manual - English - Page 44

THREAD TENSION, 10-1. Adjusting the thread tension

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10. THREAD TENSION 10. THREAD TENSION 10-1. Adjusting the thread tension CAUTION Turn off the power switch before removing or inserting the bobbin case. The machine may operate if the treadle is depressed by mistake, which could result in injury. Good even stitches 0572M Upper thread Lower thread 0573M Upper thread tension too weak or lower thread tension too strong Increase the upper thread tension. Decrease the lower thread tension. 0574M Upper thread tension too strong or lower thread tension too weak Decrease the upper thread tension. Increase the lower thread tension. Adjust by turning the adjustment screw (1) until the bobbin case drops gently by its own weight while the thread end coming out of the bobbin case is held. Becomes weaker Becomes stronger 2177M Becomes weaker After the lower thread tension has been adjusted, adjust the upper thread tension so that a good, even stitch is obtained. 1. Lower the presser foot. 2. Adjust by turning the tension nut (2). Becomes stronger 2178M 37 S-7200B

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S-7200B
10. THREAD TENSION
37
10. THREAD TENSION
10-1. Adjusting the thread tension
CAUTION
Turn off the power switch before removing or inserting the bobbin case.
The machine may operate if the treadle is depressed by mistake, which could result in injury.
Good even stitches
Upper thread
Lower thread
Upper thread tension too weak or
lower thread tension too strong
Increase the upper thread tension.
Decrease the lower thread tension.
Upper thread tension too strong
or lower thread tension too weak
Decrease the upper thread tension.
Increase the lower thread tension.
<Lower thread tension>
Adjust by turning the adjustment screw (1) until the bobbin
case drops gently by its own weight while the thread end
coming out of the bobbin case is held.
<Upper thread tension>
After the lower thread tension has been adjusted, adjust the
upper thread tension so that a good, even stitch is obtained.
1. Lower the presser foot.
2. Adjust by turning the tension nut (2).
0572M
0573M
0574M
Becomes weaker
Becomes stronger
2177M
2178M
Becomes weaker
Becomes stronger