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3704-2/03
Pfaff 3704-2/03 Adjustment Manual
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J
ustierung
10
0
1
2
6
5
3
4
Fig. 1 - 05
1
3
2
4
1
.05.04
Loc
king le
ver
Requirement
The zigzag stitc
h adjustment lev
er
3
must be able to be loc
ked in an
y position.
●
Loosen scre
w
2.
●
Press loc
king lev
er
1
against the zigzag stitc
h adjustment lev
er
3.
●
T
urn pivot pin
4
as far as possible to the lef
t.
●
Release loc
king lev
er
1.
●
Loc
king lev
er
1
must be parallel to the zigzag stitc
h adjustment lev
er
3.
●
Tighten screw
2.
9
11
Table of Contents
Table of Contents
3
Adjustment
5
Tools, Gauges and Other Accessories for Adjusting
5
Abbreviations
5
Explanation of the Symbols
5
Check and Adjustment Aid
6
Adjusting the Basic Machine
7
Balancing Weight
7
Centering the Needle in the Needle Hole (in Sewing Direction)
8
Parallel Guiding of the Needle Bar
9
Locking Lever
10
Zero Stitch and Zigzag Stitch Scale
11
Centering the Needle in the Needle Hole (Crosswise to Sewing Direction)
12
Zigzag Stitch Width
13
Multi-Stitch Movement (Only on the PFAFF 939U)
14
Zigzag Stitch Movement (Only on the PFAFF 3704-2
15
Needle Penetration Symmetry - Left, Centre and Right (Only on the PFAFF 3704-2
16
Zigzag Movement (Only on the 939U)
17
Target Positioning Sensor (Only on the 939U)
18
Needle Position Adjustment Lever
19
Adjustment Wheels for Differential Feed (Only on the PFAFF 939U)
20
Zeroing the Differentiatio (Only on the PFAFF 939 U)
21
Differential Feed Synchronisation (Only on the PFAFF 3704-2
22
Position of the Stitch Length Adjustment Wheel (on the PFAFF 939 U)
23
Position of the Stitch Length Adjustment Wheel (on the PFAFF 3704-2
24
Zeroing the Main Feed (Rear Feed Dog) on the PFAFF 939 U
25
Zeroing the Main Feed (Rear Feed Dog) on the PFAFF 3704-2
26
Zeroing the Differential Feed (Front Feed Dog) on the PFAFF 939 U
27
Zeroing the Differential Feed (Front Feed Dog) on the PFAFF 3704-2
28
Torsion Spring of the Reverse Feed Lever (on the PFAFF 939 U)
29
Torsion Spring of the Reverse Feed Lever (on the PFAFF 3704-2
30
Torsion Spring of the Differentiation Regulating Shaft (on the PFAFF 939 U)
31
Torsion Spring of the Differentiation Regulating Shaft (on the PFAFF 3704-2
32
Feeding Motion of the Main and Differential Feeds
33
Lifting Stroke of the Main and Differential Feed Dogs
34
Height of the Main and Differential Feed Dogs
35
Drive Belt in the Gearbox Housing
36
Hook Bearing Bracket
37
Hook Lubrication
38
Pre-Adjusting the Needle Height
39
Needle Rise, Hook-To-Needle Clearance and Bobbin Case Positioning-Fi Nger
40
Final Adjustment of the Needle Height
41
Bobbin Case Opener Position
42
Bobbin Case Opener Motion
43
Presser Foot to Needle Plate Clearance / Presser Foot Pressure
44
Thread Diverter Pin
45
Limiting the Knee Lever Stroke
46
Knee Lever Play
47
Bobbin Winder
48
Stitch Condensation (Only on the PFAFF 3704-2/02)
49
Switching to Reverse Feed (Only on the PFAFF 3704-2/03)
50
Thread Puller (Only on the PFAFF 3704-2/02)
51
Adjusting the Thread Trimmer -900/24
52
Axial Position of the Control Cam
52
Preliminary Adjustment of the Control Cam
53
Position of the Thread Catcher and Cutting Test
54
Readjustment of the Control Cam
55
Needle Thread Tension Release
56
Switch Diagrams
57
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Pfaff 3704-2/03 Specifications
General
Brand
Pfaff
Model
3704-2/03
Category
Sewing Machine
Language
English
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