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Manuals
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Yamato Manuals
Sewing Machine
VG3721-8
Instruction manual
Yamato VG3721-8 Instruction Manual
High speed cylinder bed 3-needla interlock stitch machine with left hand trimming mechanism
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Table Of Contents
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Contents
Table of Contents
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Table of Contents
Contents
Safety Instructions
To Ensure Safe Use
Application and Purpose
Before Use
Maintenance, Inspection and Repair
During Operation
Removal
Meaning of Caution Signs
Alert Pictorial Markings
Warning Labels on Sewing Machines
Name of each Part
Installation
Table Cutting Diagram
Table Top Type
Motor, Belt and Pulley
Clutch Motor
Servomotor
Hanging Belt
Belt Cover
Eye Guard and Finger Guard
Thread Guide Plate
Accessories
Sewing Speed and Rotating Direction of Pulley
Lubrication
Lubricating Oil
Lubricating
Changing Oil
Checking and Replacing Oil Filter
Period of Changing
Procedure for Changing
Proper Operation
Needle System
Installing Needles
Threading
Looper Thread
Adjusting Thread Tension
Pressure of Presser Foot
Adjusting Position of Presser Foot
Adjusting Movement of Differential Feed Dog
Adjusting Stitch Length
Hemming Guide (Left)
Trimming Width of Fabric
Hemming Guide (Right)
Fabric Guide (Right)
Pressure of Walking Presser Foot
Raising Upper Feed Roller
Pressure of Upper Feed Roller
SP Device and HR Device
Cleaning the Machine
Adjustments
Needle Thread Tension
Needle Thread Eyelet
Needle Thread Guide
Top Cover Thread Tension
Looper Thread Tension
Needle and Spreader
Top Cover Thread Guide
Top Cover Thread Eyelet
Distance between Needle and Looper
Using Timing Gauge
Height of Needle
Needle and Front - and Rear Position of Looper
Needle and Needle Guard
Needle and Needle Guard (Front)
Height of Feed Dog
Changing Range of Differential Ratio
Presser Foot Lift
Replacing Fabric Presser
Feeding Amount of Puller
Pressure of Clutch Tension Spring
Trimming Mechanism
Adjusting Trimming Position of Fabric
Adjusting Suction Pipe
Adjusting Suction Pipe Cover
Removing and Resetting Lower Knife
Removing and Resetting Upper Knife
Adjusting Upper Knife Stroke
Sharpening Knives
Stop the Movement of Left Knife
Cancellation of Left Knife
Specifications
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Maintenance, Inspection and Repair
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Trimming Mechanism
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