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Contents
Contents ............................................................................... Chapter - Page
13
Adjustment .............................................................................................................. 13 - 1
13.01 Notes on adjustment ................................................................................................ 13 - 1
13.02 Tools, gauges and other equipment .......................................................................... 13 - 1
13.03 Abbreviations............................................................................................................ 13 - 1
13.04 Explanation of the symbols ...................................................................................... 13 - 1
13.05 Adjusting the basic machine ................................................................................. 13 - 2
13.05.01 Position of the bottom feed dog crosswise to sewing direction ................................ 13 - 2
13.05.02 Adjusting the bottom feed dog in sewing direction.................................................... 13 - 3
13.05.03 Bottom feed dog height ............................................................................................ 13 - 4
13.05.04 Needle height (preliminary adjustment) ..................................................................... 13 - 5
13.05.05 Needle in needle-hole centre ..................................................................................... 13 - 6
13.05.06 Bottom feed dog lifting motion.................................................................................. 13 - 7
13.05.07 Feeding stroke of bottom and top feeds.................................................................... 13 - 8
13.05.08 Hook clearance, needle rise, needle height and needle guard ................................... 13 - 9
13.05.09 Top feed stroke ......................................................................................................... 13 - 11
13.05.10 Top feed lifting motion .............................................................................................. 13 - 12
13.05.11 Bobbin case opener .................................................................................................. 13 - 13
13.05.12 Slip coupling ............................................................................................................. 11 -14
13.05.13 Needle-thread tension release ................................................................................... 13 - 15
13.05.14 Thread check spring, without subclass -900/56 ........................................................ 13 - 16
13.05.15 Thread check spring on the PFAFF 1296 with subclass -900/56 ............................... 13 - 17
13.05.16 Bobbin winder .......................................................................................................... 13 - 18
13.05.17 Pressure of the lifting presser ................................................................................... 11 - 19
13.06 Adjusting the thread trimmer -900/56 ........................................................................ 13 - 20
13.06.01 Engaging solenoid ..................................................................................................... 13 - 20
13.06.02 Control cam (preliminary adjustment) ....................................................................... 13 - 21
13.06.03 Control lever spring action ........................................................................................ 11 - 22
13.06.04 Control lever stroke .................................................................................................. 13 - 23
13.06.05 Thread-trimmer drive linkage .................................................................................... 13 - 24
13.06.06 Linkage bar (only on the PFAFF 1296)....................................................................... 13 - 25
13.06.07 Thread catcher height ............................................................................................... 13 - 26
13.06.08 Thread catcher resting position ................................................................................. 13 - 27
13.06.09 Knife pressure .......................................................................................................... 13 - 28
13.06.10 Bobbin thread trapping spring ................................................................................... 13 - 29
13.06.11 Control cam (final adjustment).................................................................................. 13 - 30
13.06.12 Release lever............................................................................................................ 11 - 31
13.06.13 Release rod .............................................................................................................. 13 - 32
13.07 Parameter settings ................................................................................................... 13 - 33
13.07.01 Parameter list ........................................................................................................... 13 - 33
14 Circuit diagrams ....................................................................................................... 14 - 01