Table of Contents2 Operating Instructions 581 - 02.0 - 05/20195.2.5 Adjusting the thread tension ................................................................ 695.2.6 Adjusting the cutting mode .................................................................. 705.2.7 Initializing the piece counter ................................................................ 715.3 Buttonhole programming ..................................................................... 725.4 Sequence programming ...................................................................... 785.4.1 Deleting a buttonhole at the end of a sequence .................................. 805.4.2 Adding a buttonhole at the end of a sequence .................................... 805.4.3 Inserting a buttonhole within a sequence ............................................ 815.4.4 Switching off sequential mode............................................................. 815.5 Service menu ...................................................................................... 825.6 Activating the technician level ............................................................. 825.7 Buttonhole cycle .................................................................................. 845.8 Menu structure .................................................................................... 855.9 Menu item Machine config ............................................................ 885.9.1 Load.pos.............................................................................................. 885.9.2 Zigzag stitch width ............................................................................... 905.9.3 Thread mon. ........................................................................................ 925.9.4 Cut. time .............................................................................................. 935.9.5 E-group................................................................................................ 945.9.6 Threading position ............................................................................... 965.9.7 Operation mode................................................................................... 985.9.8 Tension data........................................................................................ 995.9.9 Multiflex (581-321 and 581-341 only) ................................................ 1015.9.10 ZZ offset ............................................................................................ 1035.9.11 Cut control ......................................................................................... 1045.9.12 Spec.funct. ........................................................................................ 1045.10 Menu item Operat. config .......................................................... 1055.10.1 Language .......................................................................................... 1055.10.2 Push buttons ..................................................................................... 1075.10.3 Sewing light ....................................................................................... 1095.10.4 Button beeps ..................................................................................... 1105.11 Menu item Test functions .......................................................... 1115.11.1 Multi test ............................................................................................ 1115.11.2 Sewing process ................................................................................. 1195.11.3 Events ............................................................................................... 1255.12 Menu item Data transfer............................................................. 1285.12.1 Import ................................................................................................ 1285.12.2 Export ................................................................................................ 1295.13 Menu item Reset data ................................................................... 1306 Maintenance..................................................................................... 1316.1 Cleaning ............................................................................................ 1336.2 Lubricating ......................................................................................... 1346.3 Servicing the pneumatic system........................................................ 1376.3.1 Adjusting the operating pressure....................................................... 137