Pfaff 591

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Version 18.06.07

91-191 524-95 Part 2

Circuit diagrams

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Table of Contents3
Tools, Gauges and Other Accessories6
Abbreviations6
Explanation of the Symbols6
Adjusting the Basic Machine7
Needle Position in Sewing Direction (on the PFAFF 571 and 591)7
Needle Position in Sewing Direction (on the PFAFF 574)8
Preliminary Adjustment of the Needle Height9
Needle Rise, Hook Clearance, Needle Height and Needle Guard (on the PFAFF 571)10
Needle Rise, Hook Clearance, Needle Height and Needle Guard (on the PFAFF 574)12
Needle Rise, Hook Clearance, Needle Height and Needle Guard (on the PFAFF 591)14
Needle Position Crosswise to Sewing Direction (on the PFAFF 571)16
Needle Position Crosswise to Sewing Direction (on the PFAFF 574)17
Needle Position Crosswise to Sewing Direction (on the PFAFF 591)18
Height and Stroke of the Bobbin Case Opener19
Height of the Feed Wheel (on the PFAFF 571)20
Height of the Feed Wheel (on the PFAFF 574)21
Height of the Feed Wheel (on the PFAFF 591)22
Stitch Length Control Eccentric23
Stitch Length Scale Disk24
Shaft Crank to Feed Wheel Drive25
Shaft Crank to Roller Presser Drive26
Clearance between Roller Presser and Feed Wheel27
Roller Presser28
Stitch Length on Stitch Length Scale29
Synchronization of Roller Presser and Feed Wheel30
Retainer (Only on Model 574)31
Knee Lever32
Needle Thread Tension Release33
Thread Check Spring (PFAFF 571 and 591)34
Thread Check Springs (PFAFF 574)35
Bobbin Winder36
Pressure of Roller Presser37
Lubrication38
Re-Engage Safety Coupling39
Adjusting the Edge Trimmer -725/0440
Position of the Knife Holder (on Model 571)40
Position of the Knife Holder (on Model 591)41
Knife Stroke (on Model 571)42
Knife Stroke (on Model 591)43
Cutting Stroke (on Model 571)44
Cutting Stroke (on Model 591)45
Knife Position46
Adjusting the Thread Trimmer -900/8347
Resting Position of the Roller Lever / Radial Position of the Control Cam47
Position of the Thread Catcher Holder48
Position of the Thread Catcher49
Knife Position and Knife Pressure50
Bobbin Thread Retaining Spring51
Manual Cutting Test52
Releasing the Tension53
Linkage Rod (Only for the PFAFF 574)54
Adjustment of Backtacking Mechanism -91155
Needle in Needle Hole (Only for PFAFF 571 and 591)55
Couping for Roller Presser Drive56
Adjusting the Roller Presser Drive57
Bevel Gears for Feed Wheel Drive58
Adjusting the Magnets for Feed Wheel Drive59
Adjusting the Magnets for Feed Wheel Drive (-725/04)60
Parameter Settings61
Parameter List61
Circuit Diagrams63
Reference List for the Circuit Diagrams 91-191 524-95 and 91-191 534-9563
Block Diagram PFAFF 570 / 590 with Control Unit P40 ED65
Circuit Diagrams 91-191 524-9566
Block Diagram PFAFF 570 / 590 with Control Unit P44 PD-L68
Circuit Diagrams 91-191 534-9569

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