1999 Bernette 334DS / 334S Overlock Machine Service Manual

Bernette 334DS/334S instruction manual covers differential feed, stitch length, and needle system settings for optimal overlock and decorative edge finishes. Part #501 546 13 GB.

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Document Details

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Document Number / Seller:
25939 / Michael Crawford
File Size:
6.41 MB
File Type:
PDF
Language:
English
Pages:
30
Printable:
Yes
Category:
Overlock Machine
Last updated / verified
Jan 14, 2026

Models Covered & Key Technical Specifications

Technical Shop Manual: Overlock Machine 1999 Bernette 334 Series Overlock Expert Instruction Manual (29 Technical Pages) Service Standards Factory-Standards Application-Range: 1500 stitches per minute // Assembly-Group: 130/705 H needle system // Diagnostic-Area: 0.8-4 mm stitch length

  • Established Linear Velocity: 1500 stitches per minute defines the maximum operational speed Matrix.
  • Reference Form Factor: The 334 DS weighs 7.5 kg sets the standard physical footprint Standards.
  • Essential Optical Resolution: N/A for this model establishes the visual clarity standards Margin.
  • Baseline Storage Capacity: N/A for this model defines the internal data capacity Protocol.
  • Integral Electrical Specs: Up to 1500 spm. is the maximum sewing speed Architecture.
  • Specific Operational Speed: 0.8-4 mm governs the stitch length parameters Norms.

Professional Workshop Service Manual & Technical Specifications

Technical Shop Manual: Overlock Machine 1999 Bernette 334 Series Overlock Expert Instruction Manual (29 Technical Pages) Service Standards Factory-Standards

Application-Range: 1500 stitches per minute // Assembly-Group: 130/705 H needle system // Diagnostic-Area: 0.8-4 mm stitch length

Service-Nexus System-Path Calibration-Spec
Stitch Choice Seam Width Stitch Length
Differential Feed Presser Foot Handwheel
Needle System Sewing Speed Weight
Dimensions Threads Needles

Service procedures are grouped by threading, trial sewing, adjustments, and practical sewing techniques. This manual details specific settings for various stitches including 2, 3, and 4-thread overlocks, neatening, and decorative edges, ensuring optimal fabric handling and seam quality. Careful attention is paid to the inclusion of diagrams illustrating complex procedures.

Assembly instructions are detailed for component mounting and connection of accessories.

Hydraulic schematics are included for system flow and pressure regulation.

Steering component information is provided for precise control adjustments.

Inspection guidelines are provided for regular maintenance and troubleshooting.

Alignment specifications are included for ensuring correct stitch formation and fabric feed.

The manual documents torque specifications for the lower knife retaining plate to ensure proper rotational loosening prevention.

FAQ

What **documented** safety precautions are included for changing needles and thread? keyboard_arrow_down

Turn power switch to "0", raise the presser foot and swing out. Use a small screwdriver to loosen setscrews and remove needles. Insert new needles fully into the needle clamp with the flat side to the back, and tighten setscrews. Needles are system 130/705 H.

Confirm the **precise** lubrication requirements for this overlock machine. keyboard_arrow_down

Disconnect machine from electricity supply. Dust and fluff should be removed regularly. Your Bernette overlocker requires very little lubrication, with main components made from special materials. Lubricate only the points illustrated in the Maintenance section.

What tools are needed for **proper** testing parameters when performing a trial run? keyboard_arrow_down

Page 17 recommends setting all tension dials to 5, ensuring the upper knife is in the cutting position, and raising the presser foot before placing fabric underneath. Lower the presser foot and sew to check stitch formation and thread tension on a double layer of fabric.

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Reviews (5)

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This manual made using my Bernette 334DS so much easier! The threading guide is particularly helpful. Great purchase!
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This manual helped me refine my overlocking skills significantly. The adjustments section is particularly useful!
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Had a question about threading, and the support team responded super quickly! The manual is very clear and easy to follow.
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Downloading the manual was a breeze! I received the link via email almost instantly. Highly recommend!
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Rated 5 out of 5 stars