
112
Adjustment
13
.05.20
Manual cutting test
Requirement
1. When it is moving forward, the thread catcher
1
must not push along the bobbin
thread
3
in front of it.
2. At the front point of reversal of the thread catcher
1
, the bobbin thread
3
must lie
approx.
2
mm
behind the lug of the thread catcher
1
.
3. At the end of the cutting operation, the needle and bobbin threads must be cut per-
fectly. The bobbin thread
3
must be clamped.
●
Carry out the cutting operation manually.
●
Check
requirement
1
. If necessary, readjust the thread catcher
1
according to chapter
13
.
05
.
16
Thread catcher height.
●
Check
requirement
2
. If necessary, readjust the thread catcher
1
according to chapter
13
.
05
.
17 Thread catcher position and knife height.
●
Check
requirement
3
. If necessary, readjust the bobbin thread clamp spring
2
according
to chapter
13
.
05
.
19
Bobbin thread clamp spring
.
3
1
2
1
3
2 mm
Fig. 13 - 21
Содержание 3588-05/020
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