MODEL 3128
7
A
B
D
C
TOP TENSION
TO CHECK:
The standard upper thread tension should be 65 - 95g when pulling the thread (cotton thread #50)
in the direction of "A" with setting the tension dial at "3". (Make sure the foot should be lowered.)
If the tension is out of the standard range, adjust it as follows:
ADJUSTMENT PROCEDURE:
1. Remove the front cover (see page 6).
2. Turn the adjusting nut "B" in the direction of "C" when the upper thread tension is too tight.
Turn the adjusting nut "B" in the direction of "D" when the upper thread tension is too loose.
3. Attach the front cover.
MECHANICAL ADJUSTMENT
