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Pfaff
Sewing Machine
3334
Pfaff 3334 User Manual
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Fig,
74
As
the
machine
is
started,
lever
B
presses
against
roller
R
and
thereby
opens
switch
ES
and
interrupts
the
flow
of
current
to
clamp
lifting
magnet
HM.
Switch
ES
remains
open
throughout
the
sewing
action.
82
From the library of: Superior Sewing Machine & Supply LLC
82
84
Table of Contents
Table of Contents
4
Description and Operation
7
General Information
7
Purpose of Employment
8
Application Possibilities
9
Operation
10
Efficiency Rating
10
Mode of Operation
10
Sewing Cycle
11
Mechanical Setup
15
Shuttle Ond Needle Bar Drive
15
Feed Motion
15
Automatic Stop Motion
20
Thread Trimming Action
22
Instructions for Repair
31
Disassembly
31
Assembly
32
Adjustment and Check-Up
34
Timing the Shuttle and Setting the Needle Bar Ot Correct Height
34
Timing the Feed Motion
40
Timing the Thread Trimming Action
47
Adjusting the Work Clamp
50
Timing the Stop Motion
50
Timing the Thread Nipper and Adjusting the Thread Tension
54
Stitching-Off
61
Sewing Thread
61
Needle
61
Bobbin Winding
62
Needle Threading
63
Threading the Bobbin Case
64
Inserting the Bobbin Case
64
Setting-Up
65
Individual Power Drive
65
Bench Power Drive
68
Individually Powered Machine on Power Benching
69
Subclass Conversion
70
Changing the Feed Cam
70
Changing the Knife Cam
71
Changing the Work Clamp Feet
72
Changing the Feed Plate
72
Trouble Shooting
72
Skipped Stitches
72
Thread Breaking
72
Needle Breaking
72
Heavy Working
73
Irregular Stopping
73
Machine Care
76
Cleaning and Oiling
76
Dismantling the Shuttle Race
78
Electromagnetic Control
79
Brief Description
79
Key to Symbols Used
80
Operating Instructions for X35 and X45 Devices
81
Turning on Master Switch HS
81
Inserting the Work and Operating Foot Switch FS (1St Switch Position)
81
Starting the Machine by Operating
81
Foot Switch FS (2Nd Switch Position)
81
Sewing Cycle and Automatic Stopping of Machine
81
Working of Device
85
Master Switch HS
85
Foot Switch FS
85
Solenoid EM
85
Solenoid HM and Switch es
87
Switch SS
88
Mounting and Adjustment Procedures
88
Switch es
88
Lever B
88
Solenoid EM
88
Solenoid HM
88
Subclass Information
92
Subclasses Having the same Gear Ratio
92
Subclasses Having the same Knife Cam
92
Subclosses Requiring Additional Parts
92
Principal Parts Varying from One Subclass to Another
92
Special Organizational Parts
97
Lock Designs Arranged by Shapes
100
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Pfaff 3334 Specifications
General
Brand
Pfaff
Model
3334
Category
Sewing Machine
Language
English
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