18
5) Routing the upper thread
Place the thread take-up lever to the highest position and hang the upper thread like in figure 23. The adequate length of
upper thread extending from the needle hole is 50mm for initial sewing.
6) Adjusting the thread tension
The result of the needlework depends on the sewing conditions such as the sewing material, used thread and stitch length. So
please adjust as desired.
- good sewing
- upper thread tension is strong while the lower thread tension
is weak.
- Upper thread tension is weak while the lower thread tension
is weak.
[Figure 23]
Caution
▶ In case of taking up the upper thread, be sure to switch off the power supply. If the user
presses on the step by mistake, the machine will start automatically, and this might lead to
physical injuries.
▶ When using the clutch motor, remember that the motor revolves for a while even after
switching off the power supply due to inertia. Make sure to start working only after the motor
has come to a complete stop.
(1) Adjusting the upper thread tension
Like in figure 24, turning the tension adjustment nut ①
of the thread tension control assembly clockwise makes
the upper thread tension stronger and counterclockwise
makes it weaker.
[Figure 24]
strong
strong
weak
weak
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