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HIGHLEAD Manuals
Sewing Machine
GC20638-25
Instruction manual
HIGHLEAD GC20638-25 Instruction Manual
Long arm compound feed split needle bar lockstitch sewing machine
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Contents
Table of Contents
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Table of Contents
Table of Contents
Preparation for Operation
Lamp Leads
Connection of Control Box
Adjustment of Needle Bar Stop Position
Cautions on Use
Lubrication (1)
Lubrication
Adjustment of Oiling to Rotating Hook
Condition of Oil Lubrication
Cautions on Operation
Operation
How to Attach Needle
How to Wind the Lower Thread
Selection Ofthread
How to Route the Upper Thread
Adjustment of Stitch Length and Reverse Sewing
Setting Bobbin
Threading of Bobbin Thread
Tension Adjustment of Bobbin Threads
I I) Adjustment of Pressure of Presser Foot
Timing between Rotating Hook Motion Afld Needle Motion
Adjustment of Feed Dog Height
Adjustment the Needle Stop Position
I;')) Needle Bar Stop Position (Left & Right)
H) Walking Foot and Presser Foot Vertical Stroke Adjustment
Relationship between Rotating Hook Motion and Take-Up Lever Motion
Adjustment
Installation of Movable Knife
Adjustment of Thread Trimmer Cam
Adjustment of Threads Tension Release Assembly
Adjustment of Scissoring Pressure of Movable Knife and Fixed Knife
A, Arm Bed Mechanism
Sharpening of Fixed Knife
Adjustment for Change of Needle-To-Needle Distance
B, Thread Tension Regulator Mechanism
C, Arm Shaft*Lower Shaft Mechanism
0, Presser Foot Mechanism
L Needle Bar & Take-Up Lever Mechanism
F, Top Feed Rock Shaft Mechanism
G.lower Shaft & Feed Rock Shaft Mechanism
H.hook Saddle Mechanism
L Knift Mechanism (1)
J, Knift Mechanism (2)
K, Touch Back and Detector Mechanism
L Oil Lubrication Mechanism
Accessories
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IGHLEAD
GC20638-25/-25D
Long Arm Compound Feed Split Needle Bar Lockstitch
Sewing Machine
Instruction Manual
Parts Catalog
SHANGHAI HUIGONG N0.3 SEWING MACHINE FACTORY
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