User Guide

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