1998 Elna 624DSE / 614DE / 604E / 644 / 634 Service Manual

For Elna 600 series overlock machines: covers threading, test sewing, adjustments, utility stitches, and maintenance procedures. Ref: Part No. 11517

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Document Details

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Document Number / Seller:
28535 / Michelle Perez
File Size:
6.48 MB
File Type:
PDF
Language:
English
Pages:
31
Printable:
Yes
Category:
Overlock Machine
Last updated / verified
Jan 3, 2026

Models Covered & Key Technical Specifications

Definitive Operations Overhaul Manual: Elna 624DSE, 614DE, 604E, 644 and 634 Overlock Sewing Machine Technical Reference - Instruction Manual & Maintenance Guide 1998 Field-Reference

Coverage-Scope: Overlock Machine / Household Sewing Machine Logic // Specification-Class: Technical Documentation / Reference Data // Calibration-Scope: N/A.

Specification System-Path Calibration-Spec
Threading Procedures Machine Setup Essential Steps
Stitch Selection Sewing Techniques Stitch Variety Variety
Adjustments Machine Controls Tension Calibration Tension
Maintenance Upkeep & Care Cleaning and Oiling Spec
Minor Disorders Troubleshooting Diagnostic Reference Reference
Safety Instructions Operation Protocols Precautionary Measures Measures

Technical content addresses

Factory: The 600 series manual provides detailed diagrams and operational steps for models 624DSE, 614DE, 604E, 644, and 634, offering clear guidance. Installation guidelines are provided for Essential: The manual details the setup process, including threading the upper and lower loopers, needles, and ensuring proper thread paths for consistent stitching. Maintenance guidelines are included for Key: Proper machine maintenance is emphasized, covering cleaning, oiling, bulb replacement, and moving blade procedures to ensure longevity and performance. OEM guidelines are included for Verified: Adjustment procedures are clearly outlined for thread tensions, stitch length, differential feed, and cutting width to achieve optimal sewing results on various fabrics. Transmission service information covers Designated: Specific utility stitches such as 3-thread/4-thread overlock, rolled hems, flatlock, and decorative topstitching are explained with diagrams and settings. HVAC system procedures are included for Approved: Troubleshooting common issues like skipped stitches, thread breaks, fabric puckering, and machine noise is facilitated through a comprehensive index and problem-solution guide.

...documents torque specifications for thread tensions to ensure proper cyclic stress resistance.

Professional Workshop Service Manual & Technical Specifications

Definitive Operations Overhaul Manual: Elna 624DSE, 614DE, 604E, 644 and 634 Overlock Sewing Machine Technical Reference - Instruction Manual & Maintenance Guide 1998 Field-Reference

Coverage-Scope: Overlock Machine / Household Sewing Machine Logic // Specification-Class: Technical Documentation / Reference Data // Calibration-Scope: N/A.

Specification System-Path Calibration-Spec
Threading Procedures Machine Setup Essential Steps
Stitch Selection Sewing Techniques Stitch Variety Variety
Adjustments Machine Controls Tension Calibration Tension
Maintenance Upkeep & Care Cleaning and Oiling Spec
Minor Disorders Troubleshooting Diagnostic Reference Reference
Safety Instructions Operation Protocols Precautionary Measures Measures

Technical content addresses

Factory: The 600 series manual provides detailed diagrams and operational steps for models 624DSE, 614DE, 604E, 644, and 634, offering clear guidance.

Installation guidelines are provided for

Essential: The manual details the setup process, including threading the upper and lower loopers, needles, and ensuring proper thread paths for consistent stitching.

Maintenance guidelines are included for

Key: Proper machine maintenance is emphasized, covering cleaning, oiling, bulb replacement, and moving blade procedures to ensure longevity and performance.

OEM guidelines are included for

Verified: Adjustment procedures are clearly outlined for thread tensions, stitch length, differential feed, and cutting width to achieve optimal sewing results on various fabrics.

Transmission service information covers

Designated: Specific utility stitches such as 3-thread/4-thread overlock, rolled hems, flatlock, and decorative topstitching are explained with diagrams and settings.

HVAC system procedures are included for

Approved: Troubleshooting common issues like skipped stitches, thread breaks, fabric puckering, and machine noise is facilitated through a comprehensive index and problem-solution guide.

...documents torque specifications for thread tensions to ensure proper cyclic stress resistance.

FAQ

Check the **standard** component identification for the 4-thread overlock stitch. keyboard_arrow_down

4-Thread Overlock settings require needle positions L and R, with thread tensions set to 5.0 (Upper looper), 3.0 (Lower looper), 2.0 (Right needle), and 2.0 (Left needle), a stitch length of 2.5, and a differential feed of 1.0.

What does the **necessary** adjustment procedures entail for needle thread tension? keyboard_arrow_down

Increase the right needle thread tension if it is too loose and clearly visible on the underside of the fabric; similarly, increase the left needle thread tension if it is too loose on the underside.

Reference the **recommended** pressure specifications for sewing extra heavy fabrics. keyboard_arrow_down

To sew extra heavy fabrics, lock the moving blade by tightening screw (c) with the Allen screwdriver; ensure the needle plate and sewing foot are refitted, and loosen slightly after sewing.

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Reviews (4)

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Rated 5 out of 5 stars
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The detailed stitching techniques section is invaluable. I feel much more confident using my machine now! The manual is well-organized and easy to follow.
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This manual made it so easy for me to get started with my Elna 600 series. The threading instructions were clear and the troubleshooting section saved me a lot of time! Highly recommend!
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I had a few questions after downloading the manual, and the support team responded quickly with helpful answers. The download process was smooth too!