Anita Garudan GF-1105 Series, User Manual, Page: 13 / 77

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MP01100EN_161101 13
10) UPPER THREAD TENSION ADJUSTMENT
10.1 Main thread adjustment device
The tension of the upper thread gets
tighter if the tension adjusting nut (1) as in
Fig. 15 is turned in a clockwise direction
and it gets looser when turned in the
opposite direction. The tension of the
thread should differ according to the
sewing conditions which depend on th e
material, thread, stitch length, etc.
Fig .1 5
10.2 Tension adjustment of thread take up lever spring
As in Fig 15, use a driver in the thread adjustment shaft groove (2) to adjust the spring tension. The
thread take up lever spring grows tighter when the driver
is turned clockwise and looser when turned
counterclockwise.
10.3 Auxiliary thread adjuster
Turn the auxiliary thread tension adjusting nut (1) in
clockwise direction to make the remaining thread length
on the needle after trimming shorter and in
counterclockwise direction to make it longer, as shown in
Fig.16. The appropriate length of the upper thread
remaining after trimming is 30mm - 40mm. Fig .16
10.4 Thread release control
The thread release takes place simultaneously with the movement of the trimming solenoid. the
amount of thread release is controlled by moving the fixed position of the thread release wire (2),
which is connected with the clutch lever (1), left and right. Loosen the two fixing nuts (3) and pull the
cable wire (2) to the left. Then fasten the nuts (3) to release the thread to a large extent. If the cable
wire is pushed to the right and the nuts (3) tightened, the thread release happens on a lesser scale.
After adjustment, tighten
the nuts (3) once agin
and check whether the
opening of thethread
guide plate (4) of the
thread adjuster is about
05 - 1 mm when the
thread releaser is in
operation. There should
be no opening when the
thread releaser is not in
operation. The thread
guide plates (4) should be
touching back to back.
Fig. 17
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