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JUKI MO-6700D Series User Manual

JUKI MO-6700D Series
67 pages
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40033638
No.E368-00
ENGINEER’S MANUAL
HIGH SPEED SEMI-DRY HEAD OVERLOCK/INTERLOCK/
SEWING MACHINE
MO-6700D Series
®

Table of Contents

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JUKI MO-6700D Series Specifications

General IconGeneral
LubricationAutomatic
TypeOverlock Machine
Number of Needles2
Number of Threads4
Stitch Length1-4mm
Differential Feed0.7 - 2
Max. Sewing Speed7000spm
Stitching Speed7000spm
BobbinNone (Uses Loopers)
MotorServo Motor

Summary

PREFACE

PREFACE

Manual for technical personnel responsible for service and maintenance of the machine.

3. STANDARD ADJUSTMENT

(1) Adjusting the needle height

Sets the needle height from the throat plate surface when the needle is at its highest position.

(2) Positioning the throat plate

Ensures correct needle entry point distance from the throat plate slot edge.

(5) Adjusting the lower looper

Covers returning amount and clearance between lower looper and needle.

4. ADDITIONAL INFORMATION AND PRECAUTIONS

(1) Thread tension

Details strength of tension springs and springs used for each model.

1. SPECIFICATIONS

(1) MO-6700D SERIES

Lists specifications for the MO-6704D, MO-6714D, and MO-6716D models.

2. MODEL NUMBERING SYSTEM

MO-6700D SERIES MODEL NUMBERING SYSTEM

Explains the coding system used for model numbers of the MO-6700D series.

13. Special machine classification

Device and attachment classification

Classifies various devices and attachments for the sewing machine.

Place of destination

Indicates the designated place of destination for the machine.

3. STANDARD ADJUSTMENT

(1) Adjusting the needle height

Sets the needle height from the throat plate surface when the needle is at its highest position.

(2) Positioning the throat plate

Ensures correct needle entry point distance from the throat plate slot edge.

3. STANDARD ADJUSTMENT

(4) Adjusting the length of the lower looper holder

Details how to adjust the length of the lower looper holder.

3. STANDARD ADJUSTMENT

(5) Adjusting the lower looper

Covers returning amount and clearance between lower looper and needle.

3. STANDARD ADJUSTMENT

(6) Position of the upper looper guide

Explains the vertical and lateral positioning of the upper looper guide.

3. STANDARD ADJUSTMENT

(7) Positioning the upper looper holder

Details how to adjust the distance for the upper looper holder.

3. STANDARD ADJUSTMENT

(8) Positioning the upper looper

Sets the distance between the throat plate and the upper looper blade point.

3. STANDARD ADJUSTMENT

(9) Adjusting the double chain looper

Covers returning amount, longitudinal motion, and clearance of the double chain looper.

3. STANDARD ADJUSTMENT

(10) Adjusting the height and clearance of the needle guard

Details height and clearance adjustments for needle guards on different machine types.

3. STANDARD ADJUSTMENT

(11) Adjusting the height of the feed dog

Specifies the height of the main and auxiliary feed dogs relative to the throat plate.

(12) Adjusting the tilt of the feed dog

Explains how to adjust the tilt of the feed dogs for proper material feeding.

3. STANDARD ADJUSTMENT

(13) Adjusting the differential feed ratio

Details the adjustment of the differential feed ratio for gathering and stretching.

3. STANDARD ADJUSTMENT

(15) Adjusting the presser foot

Covers adjusting the tilt and micro-lifting mechanism of the presser foot.

3. STANDARD ADJUSTMENT

(17) Positioning the upper and lower knives, and available overedge widths

Explains positioning of knives and adjustment of overedging width.

3. STANDARD ADJUSTMENT

(18) Resharpening of the knife

Provides guidance on resharpening the lower knife and replacing the upper knife.

(19) Position of the thread cam

Details adjustment of the thread cam and related guides/nails.

3. STANDARD ADJUSTMENT

(19) Position of the thread cam

Details adjustment of the thread cam and related guides/nails.

(19) 3) Adjusting looper thread auxiliary thread take-up lever

Explains how to adjust the auxiliary thread take-up lever for specific models.

3. STANDARD ADJUSTMENT

(20) Adjusting the throat plate support

Ensures uniform contact of the throat plate support with the throat plate.

3. STANDARD ADJUSTMENT

(22) Adjusting the looper cover

Ensures the looper cover closes smoothly without contacting the upper knife.

4. ADDITIONAL INFORMATION AND PRECAUTIONS

(1) Thread tension

Details strength of tension springs and springs used for each model.

(2) Upper looper

Provides information on selecting and using the correct upper looper.

4. ADDITIONAL INFORMATION AND PRECAUTIONS

(4) Caution in assembly

Provides guidance on applying sealant and other assembly precautions.

(5) Kinds of motor pulleys, belts and frame support plate bolts

Lists types of motor pulleys, belts, and frame support plate bolts.

5. ADJUSTMENT VALUES OF THE NEEDLE HEIGHT AND LOOPER TIMING

1-needle overlock machine / 2-needle overlock machine

Provides adjustment values for needle height and upper/lower looper components for specific machine types.

6. TROUBLES AND CORRECTIVE MEASURES

1. Needle thread breakage

Lists causes and corrective measures for needle thread breakage.

7. DIMENSIONS OF TABLE

(1) Semi-sunken type

Provides dimensions for the semi-sunken table type.