Adjustment
7.03.18 Thread check spring
38
Adjust support
1
(screw
2
) according to
Requirement 1
.
Adjust the spring tension by turning screw
3
(screw
4
).
Adjust the thread regulator
5
(screw
6
) according to
Requirement 2
.
For technical reasons it may be necessary to deviate from the
specified spring stroke or spring tension.Move the thread
regulator
5
(screw
6
) towards "+" (= more thread) or "-"
(= less thread).
Requirement
1.the movement of thread check spring
7
should be
completed when the needle point penetrate the fabric
(spring stroke approx.
7 mm
).
2.when the largest thread loop is formed while the thread is
passed around the hook, the thread check spring
7
should
rise slightly from its support.