2000s Elna PRO 704 DEX Overlock Sewing Machine Instruction Manual (P/N 396160-94)

This Elna PRO 704 DEX instruction manual covers setup, sewing programs, operator adjustments, and routine maintenance for the household overlocker. Printed in Japan in October 1995, it carries Part No. 11000 and document No. 396160-94. It does not provide internal mechanical repair procedures or electrical wiring diagrams.

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• Stitch programs: Program selection, automatic thread tensions, and display settings for overlock, stretch knit, flatlock, overcast, rolled hem, narrow hem, chainstitch, and cover hem.

• Needles and loopers: Needle positioning, upper and lower looper threading, chain looper access, tension release, and fitting or removing the two-thread converter.

• Feed and stitch adjustments: Thread-tension balancing, differential feed, stitch length, cutting width, and presser-foot settings for different fabrics and sewing techniques.

• Sewing attachments: Sewing-table installation, the instant rolled/narrow hem device, back-tack operation, and accessory use for decorative stitching and quilting.

• Routine maintenance: Illustrated oiling points, feed-dog and blade cleaning, presser-foot and needle-plate removal, light-bulb replacement, and moving-blade replacement.

• Troubleshooting: The Minor Disorders tables cover skipped stitches, thread and needle breakage, puckering, cutting faults, jamming, noise, and slow running.

This guide suits owners learning to use the PRO 704 DEX, with illustrated explanations that start with basic setup and controls.

Stitch Programs, Needles, and Threading

The Standard Sewing Programs and Display Screen charts explain how the selector's ten numbered positions provide fourteen stitch options. Color-coded paired settings distinguish related programs, helping you match the needle positions, looper configuration, and attachments to the chosen stitch before investigating a tension problem.

Needle Setting and Threading Routes illustrations show the tilting needle clamp and the separate paths through the upper, lower, and chain loopers. EL x 705 needles are recommended; the manual also addresses 130/705H (15 x 1) needles and the thread-tension adjustments their use requires.

The setup section covers the thread-guide antenna, domestic and industrial spool arrangements, and foot-control connection. Safety-system information explains why an open front or side door, raised presser foot, or released needle-clamp safety lever prevents operation.

Stitch Balance and Sewing Techniques

Thread Tensions illustrations compare balanced stitching with specific needle- and looper-thread faults. Fine-tuning guidance explains that changing programs cancels the previous program's individual tension adjustments.

Presser-foot positions A and B distinguish chainstitch/cover-hem work from the other programs. The sewing chapters also explain cornering, curved edges, decorative flatlock, edge-to-edge seams, pintucks, and quilting with the quilting guide.

The back-tack device secures the starting overlock chain within the seam, but its use excludes chainstitch and rolled hem. Snap-on thread-guide and tension-release-clip instructions address decorative threads.

Blade Replacement, Cleaning, and Fault Finding

For cutting-system repair, the maintenance section covers moving-blade replacement and its alignment relative to the fixed blade. Cleaning instructions address both blades, the feed dogs, and the presser-foot area, while illustrations identify the lubrication points.

The accessory reference identifies the blade-replacement wrench as 396001-13 and the Allen screwdriver as 396002-69. The Extra Heavy Fabrics section explains blade locking, the return to normal operation, and why cutting width cannot be adjusted while the blade is locked.

The Minor Disorders tables connect symptoms with likely setup or maintenance causes and relevant manual pages. This helps distinguish threading, tension, and blade-position problems before arranging a dealer repair.

A specific needle-breakage warning concerns fabric obstructing the looper when the moving blade is disengaged. The troubleshooting section also explains how pulling the fabric can deflect the needle into the presser foot or needle plate.

Always disconnect the machine from power before needle changes, threading, cleaning, lubrication, or blade maintenance.

Multilingual PDF and Included Pages

One printable 66-page PDF contains English, French, and German text. The total includes 61 interior content pages, two cover pages, and three blank pages.