Adjustment
13 - 13
13
.06.10
Thread check spring and slack thread regulator
Requirement
1. The stroke of thread check spring
3
should be completed when the needle point
penetrates the material (spring stroke approx.
7 mm
).
2. Slack thread regulator
4
should be so secure in its elongated hole that thread check
spring
3
moves approx.
1 mm
when the thread loop is at its largest when going round
the hook.
4
5
2
1
2
●
Turn thread tension
1
(screws
2
) according to
requirement 1
.
●
Move slack thread regulator
4
(screws
5
) according to
requirement 2
.
The stroke of thread check spring
3
and position of slack thread regulator
4
will
vary depending on the material and thread and must be corrected according to
the sewing result.
Fig. 13 - 12
3
1 mm
