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JUKI MF-7523-U11-UT User Manual

JUKI MF-7523-U11-UT
31 pages
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ENGLISH
INSTRUCTION MANUAL
MF-7500

Table of Contents

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JUKI MF-7523-U11-UT Specifications

General IconGeneral
Number of Needles3
Stitch TypeCoverstitch
LubricationAutomatic
Thread TrimmerYes
Needle Gauge5.6 mm (Standard)
MotorServo Motor

Summary

Installation

Installing the machine head onto the table

Details the process of mounting the sewing machine head onto a table for both V-belt and direct-drive types.

Lubrication and Oiling

Lubricating oil

Details how to add lubricating oil, checking the oil level and ensuring proper circulation before first use.

Operation

Attaching the needle

Details the safe procedure for loosening the setscrew, inserting the needle correctly, and tightening it.

Threading the machine head

Illustrates the correct threading path for the machine head, emphasizing careful execution to prevent issues.

Adjusting the stitch length

Explains how to adjust stitch length using the feed regulating knob and the range of adjustment.

Adjusting the differential feed ratio

Describes how to adjust the differential feed ratio using a lever to control fabric gathering or stretching.

Adjusting the thread tension

Guides on adjusting thread tension for needle, top covering, and looper threads using specific nuts.

Adjusting the Sewing Machine

Adjusting the looper

Details how to adjust the looper's lateral and longitudinal positions relative to needles for correct stitch formation.

Adjusting the height of the needle

Explains how to adjust needle clearance in the throat plate and needle bar height for proper looper interaction.

Relation between the rocking thread take-up timing and the needle thread loop

Describes adjustments via crank or eccentric cam to control needle thread loop size for stitch quality.

Adjusting the height of the feed dog

Details how to set the height of the main and differential feed dogs relative to the throat plate.

Adjusting the feed locus

Details how to adjust the feed driving movement and feed rock movement by changing eccentric cam timing.

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