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Index
Contents ..................................................................................Page
1 Adjustment ...........................................................................................................................4
1.01 Notes on adjustment .............................................................................................................4
1.02 Tools, gauges and other accessories ....................................................................................4
1.03 Abbreviations .........................................................................................................................4
1.04 Explanation of the symbols ....................................................................................................4
1.05 Control and adjustment aids ..................................................................................................5
1.06 Adjusting the basic machine ..................................................................................................6
1.06.01 Preliminary adjustment of the needle height .........................................................................6
1.06.02 Neutral position of the bottom feed dog ................................................................................7
1.06.03 Zeroing the needle feed motion (not on the PFAFF 583) .......................................................9
1.06.04 Bottom transporter stroke movement ................................................................................. 10
1.06.05 Bottom transporter height.................................................................................................... 11
1.06.06 Needle in stitch hole (in PFAFF 581) ....................................................................................12
1.06.07 Needle in stitch hole (in PFAFF 583) ....................................................................................13
1.06.08 Bottom transporter sliding movement ................................................................................. 14
1.06.09 Timing the needle feed motion (not on the PFAFF 583) ...................................................... 15
1.06.10 Eccentric hook shaft bearing and hook-to-needle clearance ................................................ 16
1.06.11 Needle rise, hook-to-needle clearance, needle height and bobbin case position fi nger .............17
1.06.12 Clearance between presser foot and needle plate ..............................................................18
1.06.13 Correction of forward feed offset (only in PFAFF 581) ......................................................... 19
1.06.14 Stitch length adjustment ......................................................................................................20
1.06.15 Limiting the stitch length .....................................................................................................21
1.06.16 Tension release mechanism .................................................................................................22
1.06.17 Thread check spring .............................................................................................................23
1.06.18 Bobin winder ........................................................................................................................24
1.06.19 Presser foot pressure ..........................................................................................................25
1.07 Adjusting the thread trimming device -900/24 .....................................................................26
1.07.01 Home position of the roller lever .........................................................................................26
1.07.02 Control cam .........................................................................................................................27
1.07.03 Front return position of the thread catcher ..........................................................................28
1.07.04 Knife pressure and cut test ..................................................................................................29
1.07.05 Top thread tension release (in machines with -900/..) ..........................................................30
2 Basic position of the machine drive unit ........................................................................31
2.01 On machines with PicoDrive and control unit P41 PD2 .......................................................31
2.02 With drive system MD-4-58-220-CE ....................................................................................32
2.03 Reseting the drive system MD-4-58-220-CE .......................................................................32
3 Block diagram ....................................................................................................................33
3.01 PFAFF 581 + 583 with MD-4-58-220-CE .............................................................................33
3.02 PFAFF 581 + 583 with PicoDrive and control unit P41 PD2 ...............................................34