1. Introducció
Thank you for choosing the Juki HZL-12ZS Sewing Machine. This compact and user-friendly machine is designed for a variety of sewing tasks, making it ideal for beginners and experienced sewers alike. To ensure safe and efficient operation, please read this instruction manual thoroughly before using your machine. Keep this manual in a safe place for future reference.

Imatge: Frontal view of the Juki HZL-12ZS Sewing Machine, showcasinel seu disseny compacte i els seus dials de control.
2. Instruccions de seguretat importants
Quan utilitzeu un aparell elèctric, sempre s'han de seguir les precaucions bàsiques de seguretat, com ara les següents:
- Llegiu totes les instruccions abans d’utilitzar aquesta màquina de cosir.
- Mantingueu els dits allunyats de totes les parts en moviment. Es requereix una cura especial al voltant de l’agulla de la màquina de cosir.
- Always unplug the sewing machine from the electrical outlet immediately after using and before cleaning, removing covers, or when making any user servicing adjustments mentioned in the instruction manual.
- Utilitzeu aquest aparell només per a l'ús previst tal com es descriu en aquest manual.
- No feu mai funcionar la màquina de cosir si té el cable o l'endoll danyat, si no funciona correctament o si s'ha caigut o s'ha fet malbé.
- No deixeu caure ni introduïu cap objecte a cap obertura.
- No utilitzar a l'aire lliure.
- No opereu on s'utilitzen productes en aerosol (esprai) o on s'administra oxigen.
- Per desconnectar, gireu tots els controls a la posició d'apagat i, a continuació, traieu l'endoll de la presa.
3. Configuració
3.1 Desembalatge
Carefully remove the machine from its packaging. Remove all packing materials, tape, and protective films from the machine. Ensure all accessories are present before discarding packaging.

Image: Cover of the Juki HZL-12ZS instruction manual, indicating the model number.
3.2 Connecting Power and Foot Pedal
- Insert the machine plug into the machine's power socket.
- Insert the foot pedal plug into the machine's foot pedal socket.
- Connecteu el cable d'alimentació a una presa de corrent adequada.
- Turn on the power switch, usually located on the side of the machine. The sewing light should illuminate.

Image: The foot pedal for the Juki HZL-12ZS Sewing Machine, with its attached power cord.
3.3 Identifying Main Components
Familiarize yourself with the key parts of your sewing machine:
- Spool Pin: Holds the thread spool.
- Dial de tensió: Adjusts upper thread tension.
- Selector de puntades: Chooses stitch patterns.
- Stitch Length Dial: Adjusts stitch length.
- Stitch Width Dial: Adjusts stitch width (if applicable).
- Take-up Lever: Guides the upper thread.
- Agulla Clamp: Holds the needle.
- Peu premsador: Holds fabric against feed dogs.
- Gossos d'alimentació: Move fabric under the needle.
- Enrotllador de bobina: Winds thread onto the bobbin.
- Volant: Puja i baixa l'agulla manualment.

Imatge: Primer pla view of the Juki HZL-12ZS control dials, including the stitch selector and tension dial.
4. Enfilar la màquina
4.1 Enrotllament de la bobina
- Col·loqueu una bobina de fil al portacarret.
- Guide the thread through the upper thread guide and around the tension disc for bobbin winding.
- Insert the thread end through a hole in the bobbin from the inside out.
- Place the bobbin onto the bobbin winder spindle and push it to the right until it clicks.
- Hold the thread end and gently press the foot pedal. The bobbin will start to wind. Once a few turns are made, trim the excess thread end.
- Continue winding until the bobbin is full. The winder will automatically stop or slow down.
- Cut the thread, push the bobbin winder spindle to the left, and remove the wound bobbin.
4.2 Enfilat superior
- Aixequeu la palanca del peu premsador.
- Col·loqueu el carret de fil al portacarrets.
- Guieu el fil a través del guiafils superior.
- Bring the thread down the right channel, around the bottom, and up the left channel.
- Enfileu la palanca de recollir el fil de dreta a esquerra.
- Bring the thread down through the lower thread guide.
- Thread the needle from front to back. If your machine has an automatic needle threader, use it carefully.

Imatge: Primer pla view of the needle and presser foot area of the Juki HZL-12ZS, showing the threading path.
5. Inserció de la bobina
- Open the bobbin cover plate, usually located on the needle plate.
- Insert the wound bobbin into the bobbin case with the thread unwinding in the correct direction (usually counter-clockwise).
- Guide the bobbin thread through the tension spring slot.
- Hold the upper thread lightly with one hand. Turn the handwheel towards you to lower and then raise the needle. This will catch the bobbin thread.
- Pull both the upper and bobbin threads to the back under the presser foot.
- Tanqueu la placa de la coberta de la bobina.

Image: Open bobbin area of the Juki HZL-12ZS, showing the bobbin case and threading path.
6. Funcionament de la màquina
6.1 Selecció de puntades
Turn the stitch selector dial to choose your desired stitch pattern. The machine offers a range of utility and decorative stitches. Refer to the stitch guide on the machine or in the full manual for details on each stitch.

Image: Close-up of the Juki HZL-12ZS showing the stitch selection dial and stitch patterns.
6.2 Stitch Length and Width
Adjust the stitch length and width using their respective dials. For most general sewing, a medium stitch length (around 2.5) is suitable. Adjust width for zigzag or decorative stitches as needed.
6.3 Cosir inversament
To secure the beginning and end of a seam, press and hold the reverse lever/button while sewing. The machine will sew backward. Release the lever/button to resume forward sewing.
6.4 Costura amb braç lliure
To sew cylindrical items like sleeves, cuffs, or pant legs, slide off the accessory box to reveal the free arm. This allows fabric to be easily maneuvered around the narrow arm.
7. Manteniment
7.1 Neteja
Regular cleaning is essential for smooth operation. Always unplug the machine before cleaning.
- Hook Area: Remove the needle, presser foot, needle plate, and bobbin case. Use the small brush provided (or a soft brush) to remove lint and dust from the hook race and feed dogs.
- Machine Surface: Netegeu l'exterior de la màquina amb un drap suau i sec. No utilitzeu productes químics agressius ni netejadors abrasius.

Image: Various accessories included with the Juki HZL-12ZS, such as bobbins, needles, and a cleaning brush.
7.2 Substitució de l'agulla
Replace the needle regularly (after 8-10 hours of sewing or if it becomes bent/dull) to prevent skipped stitches and fabric damage. Use only appropriate sewing machine needles for your machine.
8. Solució De Problemes
If you encounter issues, check the following common problems before seeking professional service:
- Punts saltats: Ensure the needle is inserted correctly, not bent, and is the correct type for your fabric. Re-thread the machine completely.
- Trencaclosques: Check for correct threading, proper tension, a burr on the needle or hook, or a damaged needle.
- La tela no s'alimenta: Ensure the presser foot is lowered and the feed dogs are not disengaged. Check for lint buildup under the needle plate.
- La màquina no arrenca: Verify the power cord and foot pedal are securely plugged in, and the power switch is on.
9. Especificacions
| Característica | Especificació |
|---|---|
| Número de model | HZL-12ZS |
| Dimensions del paquet | 15.6 x 13.2 x 9 polzades |
| Pes de l'article | 12.6 lliures |
| Font d'alimentació | Elèctric amb cable |
| És elèctric | Sí |
| UPC | 189684000602 |
10. Garantia i Suport
For detailed warranty information, please refer to the warranty card included with your machine or visit the official Juki website. For technical support, service, or to order replacement parts, contact Juki customer service or your authorized dealer. Always use genuine Juki parts for repairs.







