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JUKI LBH-781 Instruction Manual

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Instruction manual (12 pages)

Instruction manual (92 pages)

Instruction manual (56 pages)

Table Of Contents

Table of Contents

Important Safety Instructions
Contents
Before Operation
Specifications
Motor Pulley and V Belt
How to Install V Belt
Setting up the Sewing Machine
Screws Used for Set up
Attaching the Shifter Driving Pin (Asm.)
Installing Transmitter (Asm.) and Shifter Base (Asm.)
Installing the Tension Pulley Coupling
Installing the Machine Head Base (Asm.)
Installing the Motor
Setting up the Machine Head
Attaching the Flat Belt
Installation/Removal of Belt Cover
Installing the Thread Stand
Lubrication
Before Starting the Machine
Adjusting the Lubrication for the Sewing Hook
Other Lubricating Points
Inserting the Needle
Installation/Removal of Bobbin Case
Winding the Bobbin
Attaching the Bobbin
Threading the Needle-Thread
Reduction of Sewing Speed and Emergency Stop
Reduction of Sewing Speed
Emergency Stop
Manual Feed Handle
How Tо Hold the Descend Knife
Types of Stitches
Thread Tension
Adjust the Thread Tension for Purl Stitch
Adjusting the Thread Tension for Whip Stitch
Adjusting the Thread Take-Up Spring (for Purl Stitch)
Adjusting the Thread Take-Up Amount of the Thread Take-Up Lever
Adjusting the Buttonhole Length
Changing the Work Clamp Check
Replacing the Knife
Adjusting the Buttonhole Width (Stitch Width and Bar Tacking Width) and Buttonhole Reference Position
Changing the Number of Stitches
Spur Gears
Attaching the Spur Gears to Their Shafts
Adjusting the Low-Speed Cam Position
Adjusting the Presser Bar Pressure
Needle-To-Hook Relation
Adjusting the Thread Tension Release Timing
Adjustment of the Bobbin Presser Unit
Adjusting the Bobbin Thread Winder
Adjusting the Speed Transmitter
Adjustment of the Position of the Belt Shifter
Adjusting the Stopper Screw
Adjustment of the Needle Thread Trimmer
Attaching the Trimmer
Closing Timing of the Needle Thread Trimmer
Opening Timing of the Needle Thread Trimmer
Adjustment of the Bobbin Thread Trimmer
Adjustment of Needle Thread Trimmer Holder and Timiting Plate
Timing for Dropping the Knife
Trouble, Cause, and Remedy
Stitching Troubles Caused by Other Reasons

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1 Important Safety Instructions
2 Specifications
3 Setting up the Sewing Machine
4 Threading the Needle-Thread
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JUKI LBH-781 Instruction Manual

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