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Sewing Machine
591
Pfaff 591 Adjustment Manual
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68
8
0
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2
0
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4
0
n
o
i
s
r
e
V
2
.04
Bloc
k diagram PF
AFF 570 / 590 with control unit P44 PD-L
PC
BDF - PICO
T
OP
Drive / Ministop long
incremental transducer
for
sof
t
ware
download
pow
er switc
h
Mains plug
Control unit P44 PD-L
Control pac
kage
P44 PD-L
Speedcontrolunit
570/590
Sync
hronizer PD6
only on the 57
4
LS
=
Light
barrier
VR1
=
Roller presser release
VR2
= Feed
switc
h-ov
er
VR3
= VR
3
– magnet (needle) only on the
571
+
591
FSL
=
Thread tension release
PF
A
=
Automatic presser f
oot lif
t
-90
0
= Thread
trimmer
STOP
=
Start inhibitor
Block diagram
67
69
Table of Contents
Table of Contents
3
Tools, Gauges and Other Accessories
6
Abbreviations
6
Explanation of the Symbols
6
Adjusting the Basic Machine
7
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 Height
9
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 Opener
19
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 Eccentric
23
Stitch Length Scale Disk
24
Shaft Crank to Feed Wheel Drive
25
Shaft Crank to Roller Presser Drive
26
Clearance between Roller Presser and Feed Wheel
27
Roller Presser
28
Stitch Length on Stitch Length Scale
29
Synchronization of Roller Presser and Feed Wheel
30
Retainer (Only on Model 574)
31
Knee Lever
32
Needle Thread Tension Release
33
Thread Check Spring (PFAFF 571 and 591)
34
Thread Check Springs (PFAFF 574)
35
Bobbin Winder
36
Pressure of Roller Presser
37
Lubrication
38
Re-Engage Safety Coupling
39
Adjusting the Edge Trimmer -725/04
40
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 Position
46
Adjusting the Thread Trimmer -900/83
47
Resting Position of the Roller Lever / Radial Position of the Control Cam
47
Position of the Thread Catcher Holder
48
Position of the Thread Catcher
49
Knife Position and Knife Pressure
50
Bobbin Thread Retaining Spring
51
Manual Cutting Test
52
Releasing the Tension
53
Linkage Rod (Only for the PFAFF 574)
54
Adjustment of Backtacking Mechanism -911
55
Needle in Needle Hole (Only for PFAFF 571 and 591)
55
Couping for Roller Presser Drive
56
Adjusting the Roller Presser Drive
57
Bevel Gears for Feed Wheel Drive
58
Adjusting the Magnets for Feed Wheel Drive
59
Adjusting the Magnets for Feed Wheel Drive (-725/04)
60
Parameter Settings
61
Parameter List
61
Circuit Diagrams
63
Reference List for the Circuit Diagrams 91-191 524-95 and 91-191 534-95
63
Block Diagram PFAFF 570 / 590 with Control Unit P40 ED
65
Circuit Diagrams 91-191 524-95
66
Block Diagram PFAFF 570 / 590 with Control Unit P44 PD-L
68
Circuit Diagrams 91-191 534-95
69
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Pfaff 591 Specifications
General
Brand
Pfaff
Model
591
Category
Sewing Machine
Language
English
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