Short Thread Trimmer; Check Eprom-Version; Position Of The Thread-Pulling Knife And The Counter-Knife; Adjust The Thread Cutting Stitch Before Thread Cutting - Dürkopp Adler 767 Operating Instructions Manual

11. Short thread trimmer (KFA)

11.1 Check EPROM-Version

It is necessary to have at least the EPROM-Version 3312 "F". You can check the
EPROM-Version with Parameter 179.
Parameter Settings
Parameter 136 to 2
Parameter 154 to 7
Parameter 171 Position 2 (leading edge "496")
Position 2A (trailing edge "034")
Parameter 180 Number of reversion increments 114
Parameter 181 Activation delay of reversion 10
Parameter 182 Reversion "ON"
Parameter 190 Activation angle of the thread trimmer 300
Parameter 192 Activation angle of thread tension release 310

11.2 Position of the thread-pulling knife and the counter-knife

See Service Instructions Class 767.

11.3 Adjust the thread cutting stitch before thread cutting

In order to get a short trimming, it is necessary that the machine executes a short stitch
right before cutting (approx. 1 - 1.5 mm).
The length of the last stitch before thread cutting can be adjusted. Thus, the lengths of
the cut-off needle and bobbin threads can be influenced. Both thread ends should have
almost the same length.
The length of the thread cutting stitch is influenced by means of screw 1.
Turning the screw 1 in clockwise direction
means longer stitches.
Turning the screw 1 counter-clockwise
means shorter stitches.
1
GB
45