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Sewing Machine
591
Pfaff 591 User Manual
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Adjustment
11 - 41
61-052
11
.05.06
Cutting stroke on models 574 and 591
Requirement
When the edge trimmer is engaged and the needle is in the needle hole, the stroke of
knife
3
should be half in front of and half behind the needle, when the motor shaft is turned
by hand.
1
2
3
½
½
Fig. 11 - 37
●
Switch off the machine and engage the edge trimmer.
●
Adjust knife holder
1
(screw
2
) according to the
requirement
.
86
88
Table of Contents
Instruction Manual
1
Table of Contents
3
Safety
6
Directives
6
General Notes on Safety
6
Safety Symbols
7
Important Points for the User
7
Operating and Specialist Personnel
8
Operating Personnel
8
Specialist Personnel
8
Danger
9
Proper Use
10
Specifications
11
Pfaff 571, 574, 591
12
Needles and Threads
12
Possible Models and Subclasses
12
Disposal of Machine
13
Transportation, Packing and Storage
14
Transportation to Customer's Premises
14
Transportation Inside the Customer's Premises
14
Disposal of Packing Materials
14
Storage
14
Explanation of Symbols
15
Controls
16
On/Off Switch
16
Keys on the Machine Head (Only for Machines with -911
16
Bobbin Thread Monitoring with Stitch Counting
17
Pedal
17
Lever for Lifting Roller Presser
18
Knee Lever
18
Key for Setting Stitch Length
19
Swing out Roller Presser
19
Edge Trimmer -725/04 for 571
20
Edge Trimmer -725/04 for 574 and 591
21
Edge Trimmer -726/05 for 591
22
Installation and Commissioning
23
Installation
23
Adjusting the Table Height
23
Fitting the Tilt Lock
24
Adjusting the V-Belt Tension (Does Not Apply to Machines with Flange Motor)
24
Mounting the Lower V-Belt Guard (Does Not Apply to Machines with Flange Motor)
25
Mounting the Synchronizer (Does Not Apply to Machines with Flange Motor)
26
Fitting the Reel Stand
26
Mounting the Flange Motor
27
Mounting the Flange Motor to the Bearing Plate
27
Mounting the Flange Motor to the Machine
27
Mounting the Toothed Belt and Adjusting the Tension
28
Mounting the Belt Guard of the Flange Motor
28
Connecting the Safety Switch
29
Connecting the Earth Cable
29
Basic Position of the Machine Drive Unit
30
Tilted Work Base
30
Table Top Cutout
31
Commissioning
32
Switching the Machine On/Off
32
Setting up
33
Inserting the Needle on Model 571 and 591
33
Inserting the Needle on Model 574
34
Winding the Bobbin Thread; Adjusting the Primary Thread Tension
35
Removing/Inserting the Bobbin Case
36
Threading the Bobbin Case/Adjusting the Bobbin Thread Tension
36
Threading the Needle Thread and Regulating Its Tension on Model 571 and 591
37
Threading the Needle Thread and Regulating Its Tension on Model 574
38
Setting the Stitch Length
39
Setting the Stitch Counting Function for Bobbin Thread Monitoring
40
Care and Maintenance
41
Cleaning
41
Oiling the Hook
42
Oil Bowl for Hook Lubrication
42
Filling the Oil Reservoir of the Thread Lubrication Unit
43
Oiling the Edge Trimmer -726/05
43
Lubricating the Bevel Gears
44
Checking/Adjusting the Air Pressure
45
Cleaning the Air Filter of the Air-Filter/Lubricator
46
Adjustment
47
Notes on Adjustment
47
Tools, Gauges and Other Accessories
47
Abbreviations
47
Adjusting the Basic Machine
48
Adjusting the Synchronizer (Does Not Apply to Machines with Flange Motor)
48
Needle Position in Sewing Direction on the PFAFF 571 and 591
49
Needle Position in Sewing Direction on the PFAFF 574
50
Preliminary Adjustment of the Needle Height
51
Needle Rise, Hook Clearance, Needle Height and Needle Guard on the PFAFF 571
52
Needle Rise, Hook Clearance, Needle Height and Needle Guard on the PFAFF 574
54
Needle Rise, Hook Clearance, Needle Height and Needle Guard on the PFAFF 591
56
Needle Position Crosswise to Sewing Direction on the PFAFF 571
58
Needle Position Crosswise to Sewing Direction on the PFAFF 574
59
Needle Position Crosswise to Sewing Direction on the PFAFF 591
60
Height of the Feed Wheel on the PFAFF 571
62
Height of the Feed Wheel on the PFAFF 574
63
Height of the Feed Wheel on the PFAFF 591
64
Stitch Length Control Eccentric
65
Stitch Length Scale Disk
66
Shaft Crank to Feed Wheel Drive
67
Shaft Crank to Roller Presser Drive
68
Clearance between Roller Presser and Feed Wheel
69
Roller Presser
70
Stitch Length on Stitch Length Scale
71
Synchronization of Roller Presser and Feed Wheel
72
Retainer (Only on Model 574)
73
Knee Lever
74
Needle Thread Tension Release
75
Thread Check Spring (PFAFF 571 and 591)
76
Thread Check Springs (PFAFF 574)
77
Bobbin Winder
78
Pressure of Roller Presser
79
Lubrication
80
Re-Engage Safety Coupling
81
Adjusting the Edge Trimmer -725/04
82
Knife Stroke on Model 571
84
Knife Stroke on Models 574 and 591
85
Cutting Stroke on Model 571
86
Cutting Stroke on Models 574 and 591
87
Knife Position
88
Adjusting the Thread Trimmer -726/05 on Model 591
89
Position of the Knife to the Needle Plate
89
Knife Position Crosswise to Sewing Direciton
90
Knife Height
91
Cutting Stroke
92
Knife Stroke
93
Adjusting the Thread Trimmer -900/81
94
Resting Position of the Roller Lever / Radial Position of the Control Cam
94
Position of the Thread Catcher Holder
95
Distance between Thread Catcher and Needle Plate
96
Position of the Thread Catcher
97
Knife Position and Knife Pressure
98
Bobbin Thread Retaining Spring
99
Manual Cutting Test
100
Releasing the Tension
101
Linkage Rod (Only for the PFAFF 574)
102
Adjustment of Backtacking Mechanism -911
103
Needle in Needle Hole (Only for PFAFF 571 and 591)
103
Coupling for Roller Presser Drive
104
Bevel Gears for Feed Wheel Drive (on the PFAFF 571 and 574)
105
Bevel Gear Play (on the PFAFF 571 and 574)
106
Bevel Gears for Feed Wheel Drive (on the PFAFF 591)
107
Bevel Gear Play (on the PFAFF 591)
108
Parameter Settings
109
Wearing Parts
110
Circuit Diagrams
112
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Pfaff 591 Specifications
General
Brand
Pfaff
Model
591
Category
Sewing Machine
Language
English
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