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Pfaff
Sewing Machine
1425
Pfaff 1425 User Manual
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11 - 33
Adjustment
Fig. 11 - 30
5
4
3
8
7
2
6
1
3
4
0.8 mm
●
Loosen screws
1
and
2
.
●
Set thread catcher
3
above bobbin case
4
.
●
Re-position thread catcher
3
(screw
5
) according to
Requirement.
●
Balance out the vertical play of shaft
6
, set fixing collar
7
against bearing housing
8
and
tighten screw
2
.
For further adjustments leave screw
1
untightened.
11
.06.02
Thread-catcher height
Requirement
The lower edge of thread catcher
3
must clear bobbin
4
case by about
0.8 mm
.
68
70
Table of Contents
Instruction Manual
1
Table of Contents
3
Contents
4
Safety
6
Regulations
6
General Notes on Safety
6
Safety Symbols
7
Important Notes for the User
7
Notes for Operating and Technical Staff
8
Operating Staff
8
Technical Staff
8
Danger Warnings
9
Proper Use
10
Specifications
11
Pfaff 1425, Pfaff 1426
11
Disposal of Machine
13
Transportation, Packing and Storage
14
Transportation to Customer's Premises
14
Transportation Inside Customer's Premises
14
Disposal of Packing Materials
14
Storage
14
Explanation of Symbols
15
Controls
16
On/Off Switch
16
Keys on Machine Head
16
Pedal
17
Knee Switch
17
Presser Foot Fixing Key
18
Reverse-Feed Control
19
Edge Trimmer -731/02
19
Secondary Needle-Thread Tension
20
Bobbin-Thread Supply Monitor -926/06
21
Bobbin Thread Control by Stitch Counting -926/07
21
Installation and Commissioning
22
Installation
22
Adjusting the Table Height
22
Fitting the Tilt Lock
23
Tensioning the V-Belt
23
Fitting the Upper V-Belt Guard
24
Fitting the Bottom V-Belt Guard
24
Fitting the Reel Stand
25
Fitting the Synchroniser
25
Connecting the Earth Cables
26
Commissioning
27
Switching the Machine On/Off
27
Setting up
28
Inserting the Needle on the PFAFF 1425
28
Inserting the Needles on the PFAFF 1426
29
Winding the Bobbin Thread, Regulating the Winder Tension
30
Bobbin-Changing/Threading, and Regulating the Bobbin Thread Tension
31
Threading Needle Thread and Regulating Its Tension on the PFAFF 1425
32
Threading Needle Threads and Regulating Tensions on the PFAFF 1426
33
Care and Maintenance
34
Cleaning the Hook Area
34
Oiling the Hook
35
Checking/Adjusting the Air Pressure
36
Cleaning the Air Filter of the Air-Filter/Lubricator
36
Adjustment
37
Tools, Gauges and Other Equipment
37
Notes on Adjustment
37
Abbreviations
37
Adjusting the Basic Machine
38
Adjusting the Synchronizer
38
Balance Weight
39
Neutral Position of the Unison Feed
40
Feeding Motion of the Unison Feed
41
Lifting Motion of the Bottom Feed Dog
42
Bottom Feed-Dog Height
44
Needle in Needle-Hole Centre
45
Feeding-Stroke Difference
46
Needle Height (Preliminary Adjustment)
47
Bobbin-Case Opener Stroke
50
Top Feed Stroke
51
Top Feed Lifting Motion
52
Clearance between Lifting Presser and Needle Plate
53
Bobbin Winder
54
Thread Check Spring and Thread Regulator on the PFAFF 1425
55
Speed Reduction When the Stroke Is Increased
57
Needle-Thread Tension Release
58
Lubrication
59
Re-Engaging the Slip-Clutch
60
Adjusting the Edge Trimmer -731/02
61
Neutral Position of Knife
61
Knife Stroke
62
Cutting Stroke
63
Actuating Lever
64
Knife Height
65
Knife Position in Sewing Direction
66
Knife Position Crosswise to Sewing Direction
67
Adjusting the Thread Trimmer 900/81
68
Resting Position of Roller Lever/Radial Position of Control Cam
68
Thread Catcher Height
69
Thread Catcher Position
70
Knife Height
71
Knife Pressure
72
Bobbin-Thread Retaining Spring
73
Thread-Catcher Transmission Crank (Only on PFAFF 1426 )
74
Manual Cutting Test
76
Adjusting the Thread Trimmer 900/82
77
Position of the Control Cam
77
Thread Catcher and Knife Height
78
Knife Mounting Support
79
Knife Cutting Position
80
Thread Catcher Position
81
Readjustment of the Control Cam
82
Knife Pressure
83
Bobbin-Thread Retaining Spring
84
Manual Cutting Test
85
Adjusting the Bobbin-Thread Supply Monitor -926/06
86
Parameter Settings
87
Selecting and Changing Parameters
87
List of Parameters
88
Wearing Parts
90
5
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Pfaff 1425 Specifications
General
Brand
Pfaff
Model
1425
Category
Sewing Machine
Language
English
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