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Sewing Machine
GC20618 Series
HIGHLEAD GC20618 Series User Manual
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GC20618Series
Compound-Feed,Heavy Material
Lockstitch Sewing Machine
Instruction Manual
Parts Catalog
S
HANGHAI BIAOZHUN HAILING SEWING MACHINERY CO., LTD
.
2
Table of Contents
Default Chapter
2
Table of Contents
2
Precautions before Starting Operation
4
Preparation for Operation
5
Power Cable Connection
5
Connection of Control Box
6
Adjustment of Needle Bar Stop Position
6
Cautions on Use
7
Oiling (1)
7
Oiling (2)
7
Oiling Condition
7
Adjustment of Oiling to Rotating Hook
8
Cautions on Operation
8
OPERATION 1. Installation of Needles
8
Winding of Bobbin Thread
8
Selection of Thread
9
Threading of Needle Threads
9
Adjustment of Feed (Stitch) Length and Stitch Reversing (Touch-Back)
10
Setting of Bobbin
10
Threading of Bobbin Threads
10
Tension Adjustment of Bobbin Threads
11
Balance of Thread Tension
11
Needle Thread Tension
11
Adjustment of Presser Foot Pressure
11
Timing between Rotating Hook Motion and Needle Motion
11
Adjustment of Feed Dog Height
12
Relationship between Rotating Hook Motion and Take-Up Lever Motion
13
Relationship between Hook Motion and Opener Motion
13
Relationship between Needle Motion and Feed Dog Motion
13
Safety Clutch Device
14
Upper Feed Adjustment (Needle Side)
15
Outside Presser Foot and Inside Presser Vertical Stroke Adjustment
15
Adjustment of Forward/Backward Stitch Length
15
Installation of Movable Knife
16
Adjustment of Thread Trimmer Cam
16
Adjustment of Needle Threads Tension Release Assembly
17
Adjustment of Scissoring Pressure of Movable Knife and Fixed Knife
17
Sharpening of Fixed Knife
18
Adjustment for Change of Needle to Needle Distance
18
Specifications
19
PARTS CATALOG 1. Arm Bed Its Accessories
20
Thread Tension Regulator Mechanism
22
Arm Shaft Mechanism
25
Upper Shaft & Presser Foot Mechanism
27
Needle Bar & Thread Take-Up Lever Mechanism
30
Stitch Regulator Mechanism
33
Lower Shaft & Feed Rock Shaft Mechanism
35
Hook Saddle Mechanism
38
Knife Mechanism (Ⅰ)
40
Knife Mechanism (Ⅱ)
42
Touch Back Mechanism & Detector Mechanism
45
Oil Lubrication Mechanism
47
Accessories
50
Gauge Parts Liat
53
4
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HIGHLEAD GC20618 Series Specifications
General
Number of Needles
1
Stitch Type
Lockstitch
Motor Type
Servo Motor
Application
Leather
Hook
Rotary Hook
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