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UPPER AND LOWER TENSION
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Check:
Set the upper thread tension dials
F
to 3. The standard upper tension should
be 75 - 90g when pulling the thread (cotton thread 50/3) in direction
C
.
Adjust the upper tension:
1. Set the thread tension dial
F
to 3.
2. Open the face plate and adjust the thread tension by turning the thread tension screw
D
in the direction of
A
for loosen the tension
B
for tighten the tension
3. Close the face plate.
Check:
The correct factory setting of the lower thread tension is 9 to 11 g, measured with a
cotton thread no 50/3.
Adjust the lower tension:
1. Turn the screw
E
to adjust the lower tension in direction to
A
for loosen the tension
B
for tighten the tension.
