Pfaff 421E1 - Threading the Needle Thread; Adjusting the Needle Thread Tension

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Preparation

9 - 4

9.05 Threading the needle thread / Adjusting the needle thread tension

Turn the machine off!

● Thread the machine as shown in Fig. 9 - 05.

● Adjust the needle thread tension by turning knurled screw 1.

Fig. 9 - 05

Main Page

Instruction Manual1
Table of Contents3
Contents4
Safety6
Directives6
General Notes on Safety6
Safety Symbols7
Important Points for the User7
Operating and Specialist Personnel8
Operating Personnel8
Specialist Personnel8
Danger9
Proper Use10
Specifications11
Pfaff 421E111
Needle and Thread PFAFF 421E112
Possible Models12
Disposal of Machine Waste13
Transport Packaging and Storage14
Transport to the Customer14
Transport Within the Customer's Premises14
Disposal of the Packaging14
Storage14
Explanation of the Symbols15
Controls16
On/Off Switch16
Keys on the Machine Head16
Pedal17
Knee Switch17
Knee Lever18
Lever for Lifting the Roller Presser18
Control Panel19
Display19
Operation-Mode Keys20
Function Keys20
Number Keys20
Mounting and Commissioning the Machine21
Mounting21
Adjusting the Table-Top Height21
Fitting the Tilt Lock22
Adjusting the V-Belt Tension22
Mounting the Upper V-Belt Guard23
Mounting the Lower V-Belt Guard23
Mounting the Spool Holder24
Mounting the Synchronizer24
Commissioning the Machine25
Turning the Machine On/Off25
Preparation26
Inserting the Needle26
Winding the Bobbin Thread, Adjusting the Thread Pre-Tension27
Removing / Inserting the Bobbin Case28
Threading the Bobbin Case / Adjusting the Bobbin Thread Tension28
Threading the Needle Thread / Adjusting the Needle Thread Tension29
Adjusting the Stitch Length30
Selecting a Language31
Sewing32
Manual Sewing32
Sewing with the Fixed Programs33
Programmed Sewing35
Decorative Seams36
Program Interruption36
Error Messages37
Programming38
Symbols in the Status Bar38
Symbols in the Text and Graphic Fields39
Symbols in the Pictogram Bar40
Summary of the Functions in SEWING Mode41
Summary of the Functions in INPUT Mode42
Summary of the Functions in Teach in43
Summary of the Functions in Program Administration44
Summary of the Functions in the Input Menu44
Summary of the Service Functions45
Selection of Functions from Menu Levels46
Creating Seam Programs48
Altering Fixed Programs48
Programming48
Teach in51
Bartack Menu53
Seam Section End55
Programming Examples56
Example of Seam Programming56
Example for Programming a Decorative Seam66
Example of Teach in Programming69
Care and Maintenance73
Cleaning73
Filling the Oil Reservoir74
Lubricating the Bevel Gears74
Cleaning the Air Filter on the Control Box75
Adjustment76
Notes on Adjusting76
Tools, Gauges and Other Accessories for Adjusting76
Abbreviations76
Adjusting the Basic Machine77
Adjusting the Synchronizer77
Positioning the Needle in the Direction of Sewing80
Positioning the Needle Across the Direction of Sewing81
Limiting the Needle Bar Frame82
Preadjusting the Needle Height83
Hook-To-Needle Clearance, Needle Rise, Needle Height and Needle Guard84
Balancing Weight86
Bobbin-Case-Opener Eccentric and Retaining Lug87
Bobbin Case Opener Position88
Feed Wheel89
Clearance between Roller Presser and Feed Wheel90
Roller Presser91
Automatic Presser-Foot Lifter92
Knee Lever93
Tension Release94
Thread Check Spring95
Bobbin Winder96
Roller Presser Pressure97
Adjusting the Thread Trimmer -900/6198
Preadjusting the Control Cam98
Roller Lever99
Engaging Solenoid100
Actuating Lever101
Connecting Rod102
Thread-Catcher Height103
Thread-Catcher Position104
Knife Pressure105
Bobbin-Thread Clamp Spring106
Control Cam Final Adjustment107
Manual Cutting Test108
Tension Release (During Trimming Process)109
Stop Positions110
Parameter Adjustments111
Adjusting Positions111
Adjusting the Counter112
Adjusting Speeds112

Pfaff 421E1 - Threading the Needle Thread; Adjusting the Needle Thread Tension

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