7. THREAD TENSION
7. THREAD TENSION
7-1. Adjusting the thread tension
Good even stitches
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Lower thread -
A CAUTION
• Upper thread tension
The tension of the upper thread is adjusted using the
tension thumb nut
O.
To increase the tension of the upper thread, turn the
tension thumb nut
0to the right. To decrease ten-
sion, turn the tension thumb nut
0to the left.
Tum off the power switch before removing or
inserting the bobbin case.
The motor will keep turning even after the
power is switched off as a result of the
motor's inertia. Wait until the motor stops
fully before starting work. The machine
may operate if the treadle is pressed by
mistake, which could result in injury.
• Lower thread tension
Adjust by turning the thread tension nut. until the bob-
bin case will not drop by its own weight while the thread
end coming out of the bobbin case is held.
Upper thread tension too weak or lower thread tension too
strong
Upper thread tension too strong or lower thread tension
too weak
Lower thread
Upper thread -
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7-2. Adjusting the presser foot pressure
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I More pressure 2"Less pressure
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Adjust the presser foot pressure to lower as much as
possible so that the presser foot can properly hold
down material by turning the screw
O.
- 13 -
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