1. Introducció
This instruction manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your Bernette B77 Sewing Machine. The Bernette B77 is a computerized sewing and quilting machine designed for a wide range of creative projects, offering features such as a 5-inch color touchscreen, multi-function knobs, dual feed, and a semi-automatic needle threader. Please read this manual thoroughly before using the machine.
2. Instruccions de seguretat
Seguiu sempre les precaucions de seguretat bàsiques quan utilitzeu aparells elèctrics per reduir el risc d'incendi, descàrrega elèctrica o lesions.
- Ensure the machine is unplugged when not in use, before cleaning, or when making any adjustments.
- Keep fingers away from all moving parts, especially the needle.
- Use the correct needle plate for the selected stitch to prevent needle breakage.
- No feu funcionar la màquina si el cable d'alimentació està danyat o si la màquina no funciona correctament.
- Keep the machine dry and away from heat sources.
- Aquest aparell no està pensat per ser utilitzat per persones (inclosos nens) amb capacitats físiques, sensorials o mentals reduïdes, o amb manca d'experiència i coneixements, tret que hagin rebut la supervisió o instruccions sobre l'ús de l'aparell per una persona responsable de la seva seguretat.
3. Contingut del paquet
Your Bernette B77 Sewing Machine package includes the following items:
- Bernette B77 Sewing Machine
- 8 Presser Foot Soles
- Taula d'extensió gran
- Semi-automatic Needle Threader
- Programmable Foot Control with Back-kick Function
- Standard accessories (needles, bobbins, cleaning brush, seam ripper, screwdriver, etc.)

Figura 3.1: Accessoris inclosos. This image displays the comprehensive set of accessories that come with the Bernette B77, including multiple presser feet for different sewing tasks, bobbins, a needle set, cleaning tools, and a seam ripper.
4. Producte acabatview
Familiarize yourself with the main components and features of your Bernette B77 Sewing Machine.

Figure 4.1: Machine with Extension Table. The Bernette B77 sewing machine is shown with its large extension table, providing an expanded work surface ideal for quilting and larger projects.

Figure 4.2: 5-inch Color Touchscreen. This image highlights the intuitive 5-inch color touchscreen interface, allowing for easy navigation and selection of stitches and settings.

Figura 4.3: superior View with Threading Components. The top cover of the Bernette B77 is open, showing the thread spool pin, bobbin winder, and other components essential for threading the machine.

Figure 4.4: Machine Dimensions. This image provides the physical dimensions of the Bernette B77 sewing machine, indicating its height, width, and depth for placement and storage considerations.
5. Configuració
5.1 Connexió d'alimentació
Connect the power cord to the machine and then to a suitable electrical outlet. Ensure the machine is switched off before connecting.
5.2 Enfilar la màquina
Follow the numbered guides on the machine for correct upper thread path. Utilize the semi-automatic needle threader for quick and easy needle threading.
5.3 Enrotllament de la bobina
Place the empty bobbin on the bobbin winder spindle. Guide the thread as indicated by the machine's markings. Start the winding process; the machine will automatically stop when the bobbin is full.
5.4 Attaching the Presser Foot
Raise the presser foot lifter. Align the desired presser foot with the presser foot holder and lower the lifter until it snaps into place.
5.5 Attaching the Extension Table
Slide the extension table onto the free arm of the machine until it is securely seated. This provides a larger work surface for bigger projects.
6. Instruccions de funcionament
6.1 Encès/Apagat
Locate the power switch on the side of the machine. Press to turn the machine on or off.
6.2 Using the Touchscreen and Multi-function Knobs
The 5-inch color touchscreen allows for intuitive selection of stitches and settings. Use the multi-function knobs for quick adjustments to stitch length, width, and other parameters as displayed on the screen.
6.3 Selecció de puntades
The Bernette B77 offers 500 stitches, including 17 different buttonholes. Navigate through the stitch categories on the touchscreen to select your desired stitch.
6.4 Dual Feed System
Engage the dual feed system for even fabric feeding, especially useful when working with multiple layers or slippery materials. Refer to the machine's on-screen guide for activation.
6.5 Programmable Foot Control
The foot control can be programmed for various functions, including needle up/down position and reverse stitching. Consult the sewing consultant feature for customization options.
6.6 Sewing Consultant
The integrated sewing consultant provides valuable tips and recommendations for optimal stitch settings based on fabric type and project requirements. Access this feature via the touchscreen.
7. Manteniment
7.1 Neteja de la màquina
Regularly clean the bobbin area, feed dogs, and tension discs using the provided brush. Ensure the machine is unplugged before cleaning.
7.2 Substitució de l'agulla
Replace the needle frequently, especially when starting a new project or if the needle shows signs of wear or bending. Use only needles suitable for your machine and fabric type.
8. Solució De Problemes
Aquesta secció tracta problemes comuns que podeu trobar. Per a problemes més complexos, poseu-vos en contacte amb l'atenció al client.
| Problema | Causa possible | Solució |
|---|---|---|
| Thread breaks frequently | Incorrect threading, needle bent/dull, tension too tight, poor quality thread. | Re-thread the machine, replace needle, adjust tension, use quality thread. |
| Puntades saltades | Incorrect needle size/type, bent needle, improper threading, presser foot not suitable. | Change needle, check threading, use appropriate presser foot. |
| Machine not sewing | Power not connected, bobbin winder engaged, needle not inserted correctly. | Check power, disengage bobbin winder, re-insert needle. |
9. Especificacions
| Característica | Detall |
|---|---|
| Número de model | B77 (5220077.0.24) |
| Dimensions del producte | 14.17 x 0.79 x 11.81 inches (Machine only); 14"D x 22"W x 17"H (Overall with extension table) |
| Pes de l'article | 15.4 lliures (7 quilograms) |
| Marca | Bernette |
| Fabricant | Bernina |
| Color | Negre, Blanc |
| Material | Metall, plàstic |
| Font d'alimentació | AC |
| Mostra | Pantalla tàctil a color de 5 polzades |
| Recompte de punts | 500 (including 17 buttonholes) |
| Sistema d'alimentació | Alimentació dual |
| Threader d'agulles | Semiautomàtic |
10. Garantia i Suport
For warranty information, please refer to the documentation included with your purchase or visit the official Bernette weblloc.
For technical support, service, or to purchase replacement parts, please contact your authorized Bernette dealer or customer service.
- Plans de protecció: Hi ha disponibles plans de protecció opcionals de 3 i 4 anys per a una cobertura ampliada.