HIGHLEAD GC20518 Series User Manual

Name: HIGHLEAD GC20518 Series
Brand: HIGHLEAD
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60 pages

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HIGH

LEAD

GC20518 Series

Purchasing

Dept

Copy

Twin-Needl~

High Speed Lockstitch Sewing

Machine

Instruction

Manual

Parts Catalog

SHANGHAI HUIGONG

N0.3

SEWING

MACHINE

FACTORY

From the library of: Superior Sewing Machine & Supply LLC

Table of Contents3
Precautions before Starting Operation7
Preparation for Operation8
Power Cable Connection8
Connection of Control Box9
Adjustment of Needle Bar Stop Position9
Cautions on Use10
Oiling ( 1)10
Oiling (2)10
Oiling Condition10
Adjustment of Oiling to Rotating Hook11
Cautions on Operation11
Operation11
Installation of Needles11
Winding of Bobbin Thread12
Selection of Thread12
Threading of Needle Threads12
Adjustment of Feed (Stitch) Length and Stitch Reversing (Touch-Back)13
Setting of Bobbin13
Adjusting of Needle Thread Guide13
Threading of Bobbin Threads14
Tension Adjustment of Bobbin Threads14
Balance of Thread Tension14
11. Needle Thread Tension14
Adjustment of Presser Foot Pressure15
Timing between Rotating Hook Motion and Needle Motion15
Adjustment of Feed Dog Height16
Relationship between Rotating Hook Motion and Take-Up Lever Motion16
Relationship between Hook Motion and Opener Motion17
Relationship between Needle Motion and Feed Dog Motion17
Installation of Movable Knife18
Adjustment of Thread Trimmer Cam19
Adjustment of Meshing Pressure of Movable Knife and Fixed Knife20
Sharpening of Fixed Knife20
Adjustment for Change of Needle Gage21
Wiper Adjustment22
Speciifications23
PARTS CATALOG 1. Arm Bed Its Accessories24
Thread Tension Regulator Mechanism26
Arm Shaft Presser Foot Mechanism29
Needle Bar Rocking Motion Mechanism32
Stitch Regulator Mechanism34
Lower Shaft & Feed Rock Shaft Mechanism36
Hook Saddle Mechanism39
Knife Mechanism ( =)45
Wiper Mechanism49
Oil Lubrication Mechanism51
Accessories56
Gauge Parts Liat57

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HIGHLEAD GC20518 Series Specifications

General

Brand	HIGHLEAD
Model	GC20518 Series
Category	Sewing Machine
Language	English

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Table of Contents

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