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SF 7400 Series
SunStar SF 7400 Series User Manual
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User’
s
Manual
SF 7400 Series
SF 7500 Series
High-speed Flat Bed
Interlock Sewing
Machine
1) For proper use of the machine,
thoroughly read this manual before use.
2) Keep this manual in a safe place for
future reference in case the machine
breaks down.
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Table of Contents
Table of Contents
4
Machine Safety Regulations
6
Transporting Machine
6
Installing Machine
6
Repairing Machine
6
Operating Machine
7
Safety Devices
7
Caution Mark Position
8
Contents of Marks
8
Names of Machine Parts
9
Specifications
10
Installation
11
Installation of Table
11
Installation of Motor and Belt
13
Adjustment of Belt Tension
13
Attachment of Belt Cover
13
Installing Cover for Needle Bar Thread Guide
14
Installation of Thread Guide Plate
14
Sewing Speed and Rotating Direction of Pulley
14
Lubrication
15
Lubricating Oil
15
Supplying Oil
15
Oil Gauge and Oil Window
15
Oil Change
16
Cleaning the Oil Filter
16
Standard Adjustments of the Sewing Machine
17
Needle Used
17
Installation of Needle
17
Threading
18
Adjustment of Thread Tension
18
Adjustment of Presser Foot Tension
19
Adjustment of Presser Foot
19
Adjustment of Main Feed
19
Adjustment of Differential Feed
21
Needle Cooling Device and Oil Supply Device for Needle Thread
22
Adjustment of Sewing Machine
23
Adjustment of Needle Thread Tension
23
Adjustment of Top Cover Thread Tension
24
Adjustment of the Looper Thread Tension
24
Position of Looper Cam
25
Removing Presser Foot and Amount of Presser Foot Lift
25
Relation between Needle and Needle Plate
26
Fixing Angle and Height of Looper
26
Movement of Looper to the Right
26
How to Use Timing Gauge
27
Height of Needle Bar
27
Longitudinal Position of Needle and Looper
27
Needle and Needle Guard(Rear)
28
Needle and Needle Guard(Front)
29
Height of Feed Dogs
29
Adjustment of Needle and Spreader
29
Automatic Thread Trimmer
31
Operation
31
Wiring
33
Air Pressure Wiring Map
37
Installation of Synchronizer Sensor
40
Adjustment of Automatic Thread Trimmer
41
Adjustment of Thread Tension Release Mechanism
46
Adjustment of Air Wiper
49
Presser Foot Lifter Mechanism
50
4
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SunStar SF 7400 Series Specifications
General
Brand
SunStar
Model
SF 7400 Series
Category
Sewing Machine
Language
English
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