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Index
Contents ................................................................................Page
4
1.05.04 Knife stroke (on models 574 and 591) ..................................................................................43
1.05.05 Cutting stroke (on model 571)..............................................................................................44
1.05.06 Cutting stroke (on models 574 and 591) ..............................................................................45
1.05.07 Knife position .......................................................................................................................46
1.06 Adjusting the thread trimmer -900/83 ..................................................................................47
1.06.01 Resting position of the roller lever / radial position of the control cam ................................47
1.06.02 Position of the thread catcher holder ...................................................................................48
1.06.03 Position of the thread catcher ..............................................................................................49
1.06.04 Knife position and knife pressure .........................................................................................50
1.06.05 Bobbin thread retaining spring .............................................................................................51
1.06.06 Manual cutting test ..............................................................................................................52
1.06.07 Releasing the tension ..........................................................................................................53
1.06.08 Linkage rod (only for the PFAFF 574) ...................................................................................54
1.07 Adjustment of backtacking mechanism -911/.. .....................................................................55
1.07.01 Needle in needle hole (only for PFAFF 571 and 591) ...........................................................55
1.07.02 Coupling for roller presser drive ...........................................................................................56
1.07.03 Bevel gears for feed wheel drive .........................................................................................57
1.07.04 Bevel gear play .....................................................................................................................58
1.07.05 Adjusting the magnets .........................................................................................................59
1.08 Parameter settings ...............................................................................................................60
2 Block diagram .....................................................................................................................61