Adjustment Procedure
2. Correction for tension
1). Confirmation of the current state
1. Check the tension of the span #60 at the time of setting the numerical vale on the panel to 60.
* The Gunze span #60 is used for thread.
* Let the thread take-up spring and the thread guide through.
Conditions at the time of checking the tension (The running of a sewing machine is unnecessary. When
the presser foot is lifted and then lowered, tension is applied.)
(1). To release the pre-tension load (It is possible to do it if a screw
❶
tip aligns with a nut
❸
.)
(2). To pull the thread fast (about 10 cm/s) because the tension meter is shaken too much when the thread
pulling speed at the time of measuring tension is in conformity with the standard
(3). To close the (thread tension) disk for active tension (When time has passed, it is released.)
2. As a result of the above check, 60 grams of
tension were applied at 35 of the numerical
value on the panel.
A correction value becomes, therefore, a
minus 25 (35 minus 60 is a minus 25).
* Correction is unnecessary for 60g.
❾
2). Correction method
1. Turn on the sewing machine and hold down
the
❾
.
2. Select the "8. Check program" to display the
check program list screen.
3. Select the "7. Active tension."
4. The corrected default value for the active
tension is 20.
Then, enter the expression, 20-25 =-5, and
press the
❺
to fix it.
5. By the above procedure, the tension 60 is
applied at the time of 60 displayed on the
panel.
❺
– 39 –
