1. Introduktion
The SINGER® HD0400S Heavy Duty Overlock Serger Sewing Machine is designed for durable performance and professional finishes. This machine offers speed, strength, and precision for various sewing projects, from finishing seams to creating decorative edges. It features a heavy metal frame, 2/3/4 thread capability, and a high stitching speed of up to 1,300 stitches per minute.

Figur 1: The SINGER HD0400S Heavy Duty Overlock Serger Sewing Machine, showcasing dens robuste design.
This manual provides instructions for setting up, operating, and maintaining your SINGER HD0400S serger to ensure optimal performance and longevity.
2. Vigtige sikkerhedsinstruktioner
Before using the SINGER HD0400S serger, please read all instructions. Keep this manual for future reference.
- Tag altid stikket ud af maskinen umiddelbart efter brug og før rengøring, fjernelse af dæksler eller foretagelse af brugervedligeholdelsesjusteringer.
- Lad ikke børn betjene maskinen uden opsyn.
- Brug kun dette apparat til dets tilsigtede brug som beskrevet i denne vejledning.
- Brug aldrig maskinen, hvis ledningen eller stikket er beskadiget, hvis den ikke fungerer korrekt, eller hvis den er blevet tabt eller beskadiget.
- Keep fingers away from all moving parts. Special care is required around the serger needles and cutting knife.
- Brug altid den rigtige stingplade. Den forkerte plade kan få nålen til at knække.
- Træk eller skub ikke i stoffet under syning. Dette kan afbøje nålen og få den til at knække.
- Turn the serger off when making any adjustments in the needle area, such as threading the needle, changing the needle, or changing the presser foot.
3. Machine Components and Included Accessories
3.1 Maskin overview
Familiarize yourself with the main parts of your SINGER HD0400S serger.

Figur 2: Overview of the SINGER HD0400S serger with key components labeled, including tension indicators, stitch length display, and differential feed adjustment.
- Right Needle Thread Tension Selector (Green): Adjusts tension for the right needle thread.
- Left Needle Thread Tension Display (Blue): Displays tension for the left needle thread.
- Upper Looper Thread Tension Indicator (Orange): Indicates tension for the upper looper thread.
- Lower Looper Thread Tension Indicator (Yellow): Indicates tension for the lower looper thread.
- Stitch Length Display: Shows the current stitch length setting.
- Differential Feed Adjustment Lever/Button: Controls the differential feed ratio.
- Cloth Plate: The working surface where fabric is placed.
3.2 Inkluderet tilbehør
The following accessories are included with your SINGER HD0400S serger:
- 4 Thread Spool Holders
- Universalfod
- Lint Brush
- Nåle
- Scrap Bag
- Skruetrækker
- Spare Lower Knife
- Spreder
- Opbevaringsrum
- Pincet
4. Opsætning
4.1 Udpakning og placering
- Carefully remove the serger from its packaging.
- Placer maskinen på en stabil, flad overflade.
- Ensure there is adequate space around the machine for fabric handling and accessory storage.
- Tilslut netledningen til maskinen og derefter til en passende stikkontakt.
4.2 Trådning af maskinen
The SINGER HD0400S features a color-coded threading system and on-machine diagrams to simplify the threading process.

Figur 3: The color-coded threading paths on the SINGER HD0400S serger, designed for ease of use.
- Løft trykfoden, og drej håndhjulet mod dig selv for at hæve nålene til deres højeste position.
- Follow the color-coded guides on the machine for each thread (blue for left needle, green for right needle, orange for upper looper, yellow for lower looper).
- Use the included tweezers to assist with guiding threads through small openings.
- Ensure all threads are correctly seated in their tension discs and guides.
Refer to the detailed threading diagrams printed on the machine for precise instructions.
5. Betjeningsvejledning
5.1 Basic Operation and Stitch Options
The HD0400S offers 2, 3, or 4 thread stitch options for various professional finishes.

Figur 4: Key operational features of the SINGER HD0400S, including high-speed stitching, the larger cutting knife, and versatile thread capacity.
- Stitching Speed: The machine operates at up to 1,300 stitches per minute, allowing for efficient completion of projects.
- 2/3/4 Thread Capability: Select the appropriate number of threads for your desired stitch type (e.g., 4-thread overlock for strong seams, 3-thread for general finishing, 2-thread for delicate rolled hems).
- Stitch Length Adjustment: Use the stitch length dial to set the desired stitch length for your fabric and project.
5.2 Differential Feed Control
The differential feed system controls the movement ratio between the front and back sections of the feed teeth. This feature is crucial for managing various fabric types.

Figur 5: A hand adjusting the differential feed dial, which helps prevent fabric stretching or puckering.
- Preventing Puckering: For lightweight or stretchy fabrics, adjust the differential feed to a higher ratio (e.g., above 1.0) to prevent puckering.
- Preventing Stretching: For knit fabrics or bias-cut materials, adjust to a lower ratio (e.g., below 1.0) to prevent stretching.
- Even Stitching: For most woven fabrics, a 1:1 ratio (1.0) is suitable for even stitching.
5.3 Built-in Rolled Hem
The HD0400S features a built-in rolled hem plate, allowing for quick conversion to rolled hem stitching without changing the stitch plate.
- Locate the lever for the rolled hem conversion.
- Flip the lever to engage the rolled hem setting.
- Adjust tension settings as recommended for rolled hems (refer to the full user manual for specific tension guidelines).
5.4 Free Arm Design
The free arm design facilitates sewing tubular items such as cuffs, sleeves, and small openings.
- Remove the accessory storage compartment to expose the free arm.
- Slide the tubular fabric item onto the free arm.
- Proceed with stitching, ensuring the fabric moves smoothly around the free arm.
5.5 Dual LED Lighting
Two integrated LED lights illuminate the work area, reducing shadows and improving visibility, especially when working with dark fabrics or in low-light conditions.

Figur 6: A user operating the SINGER HD0400S, demonstrating the illuminated work area provided by the dual LED lights.
6. Vedligeholdelse
Regular maintenance ensures the smooth operation and longevity of your serger.
6.1 Rengøring
- Sluk: Sluk altid maskinen og tag stikket ud af stikkontakten inden rengøring.
- Fjern fnug: Use the included lint brush to remove lint and thread scraps from the feed dogs, looper area, and under the needle plate.
- Scrap Bag: Regularly empty the scrap bag to prevent accumulation of fabric trimmings.
- Udvendig rengøring: Wipe the exterior surfaces with a soft, dry cloth. Do not use harsh chemicals or abrasive cleaners.
6.2 Replacing the Lower Knife
The serger includes a spare lower knife. Replace the knife when it becomes dull to ensure clean fabric cuts.
- Sikkerhed først: Sørg for, at maskinen er taget ud af stikkontakten.
- Access Knife: Open the front cover to access the lower knife.
- Fjern den gamle kniv: Use the screwdriver to loosen the screw holding the lower knife in place and carefully remove it.
- Installer ny kniv: Insert the spare lower knife, ensuring it is correctly positioned, and tighten the screw securely.
- Prøve: Close the cover and perform a test stitch on scrap fabric to verify proper cutting.
7. Fejlfinding
Dette afsnit omhandler almindelige problemer, du kan støde på. For mere detaljeret fejlfinding henvises til den komplette brugermanual.
| Problem | Mulig årsag | Løsning |
|---|---|---|
| Springet sting over | Forkert nål, bøjet nål, forkert trådning, forkert trådspænding. | Replace needle with correct type/size, re-thread machine carefully, adjust tension settings. |
| Trådbrud | Høj spænding, gevind af dårlig kvalitet, grater på gevindbanen, forkert gevindskæring. | Reducer spændingen, brug kvalitetstråd, kontroller trådbanen for blokeringer, og tråd den igen. |
| Stoffets rynkning/strækning | Forkert indstilling af differentialtransport. | Adjust differential feed ratio according to fabric type (see Section 5.2). |
| Maskine starter ikke | Netledning ikke tilsluttet, strømafbryder slukket, sikkerhedsfunktioner aktiveret. | Check power connections, ensure switch is on, verify all covers are closed. |
8. Specifikationer
| Feature | Detalje |
|---|---|
| Mærke | SANGER |
| Modelnummer | HD0400S |
| Farve | Grå |
| Materiale | Metal (Heavy Duty Frame) |
| Produktmål (D x B x H) | 14" D x 11" B x 11.5" H |
| Strømkilde | Elektrisk |
| Stitch Options | 2/3/4 Thread |
| Sting pr. minut (SPM) | Op til 1300 |
| Skærekniv | 60% Larger than standard models |
| Differentialtilførsel | Justerbar |
| Rullet Hem | Indbygget plade |
| Arm Type | Fri arm |
| Belysning | Dobbelt LED lys |
| Bærbarhed | Indbygget bærehåndtag |
| GTIN (UPC) | 037431887269 |
9. Garanti og support
For detailed warranty information, please refer to the official SINGER warranty documentation included with your purchase.
For comprehensive instructions, advanced techniques, and further troubleshooting, please download the complete User Manual (PDF) from the official SINGER webhjemmeside eller via det link, der blev angivet under købet.
Download brugermanual (PDF)
For customer support, visit the official SINGER webwebsted eller kontakt deres kundeserviceafdeling.