Bernette B37 Computerized Sewing Machine User Manual

Introduction

This manual provides detailed instructions for the Bernette B37 Computerized Sewing Machine. It is designed to assist users in setting up, operating, maintaining, and troubleshooting the machine to ensure optimal performance and longevity. The Bernette B37 is equipped with 50 built-in stitches, an LCD display, automatic needle threader, and a one-step buttonhole function, making it suitable for various sewing projects.

Please read this manual thoroughly before using the machine to familiarize yourself with its features and functions.

Image: Front view of the Bernette B37 Computerized Sewing Machine, showcasing its compact design and LCD display.

Setup

1. Power Connection

Connect the power cord to the machine and then to a suitable power outlet. Ensure the machine is placed on a stable, flat surface.

2. Bobbin Winding

1. Place a spool of thread on the spool pin.
2. Guide the thread through the upper thread guide and around the bobbin winding tension disc.
3. Place an empty bobbin onto the bobbin winder spindle.
4. Wrap the thread around the bobbin a few times, then push the bobbin winder spindle to the right.
5. Press the start/stop button or gently press the foot control to begin winding. Stop when the bobbin is full.
6. Cut the thread and push the bobbin winder spindle back to the left.

Image: Top view of the Bernette B37, illustrating the correct path for bobbin winding.

3. Threading the Machine

1. Raise the presser foot and the needle to its highest position.
2. Place the thread spool on the spool pin.
3. Follow the numbered threading path indicated on the machine, guiding the thread through all guides and tension discs.
4. Bring the thread down to the needle area.
5. Use the automatic needle threader for convenience, or manually thread the needle from front to back.
6. Pull approximately 6 inches of thread through the needle eye.

Image: A detailed diagram on the Bernette B37 machine illustrating the step-by-step process for threading the upper thread.

4. Inserting the Bobbin

1. Open the bobbin cover plate located on the needle plate.
2. Insert the wound bobbin into the bobbin case, ensuring the thread unwinds in the correct direction (usually counter-clockwise).
3. Guide the bobbin thread through the tension spring and into the thread guide slot.
4. Replace the bobbin cover plate.
5. Hold the upper thread lightly and turn the handwheel towards you to bring the bobbin thread up through the needle plate opening.
6. Pull both threads under the presser foot and towards the back of the machine.

Operating the Machine

1. LCD Display and Controls

The Bernette B37 features a clear LCD display that shows the selected stitch number, recommended presser foot, stitch length, and stitch width. Use the arrow buttons next to the display to navigate and adjust settings.

2. Stitch Selection

The machine offers 50 built-in stitches, including utility, stretch, and decorative options. Select your desired stitch using the stitch selection buttons. The display will update to show the chosen stitch and its default settings.

3. Adjusting Stitch Length and Width

After selecting a stitch, use the plus and minus buttons to adjust the stitch length and width as needed for your fabric and project. The LCD display will show the current values.

4. Speed Control

The speed control slider allows you to adjust the sewing speed. Slide it to the left for slower speeds, ideal for intricate work or beginners, and to the right for faster speeds.

5. Start/Stop Button and Foot Control

You can operate the machine using either the start/stop button or the foot control. Press the start/stop button to begin and end sewing. The foot control provides variable speed control based on pressure.

6. Automatic Needle Threader

To use the automatic needle threader, ensure the needle is in its highest position. Lower the threader lever, hook the thread, and release the lever to thread the needle quickly.

7. One-Step Buttonhole Function

The Bernette B37 includes a one-step buttonhole function. Attach the designated buttonhole foot, place the button in the foot's holder, select a buttonhole stitch, and the machine will automatically sew a buttonhole to the correct size.

8. Free Arm Sewing

Remove the accessory box to convert the machine into a free arm. This feature is useful for sewing tubular items such as sleeves, cuffs, and pant legs.

Image: A close-up view highlighting the needle plate, drop-in bobbin system, and the stitch selector switch on the Bernette B37.

Image: The Bernette B37 with its accessory box open, revealing storage for various sewing tools and accessories.

Maintenance

Regular maintenance ensures the smooth operation and longevity of your Bernette B37 sewing machine.

1. Cleaning

• Always unplug the machine before cleaning.
• Use a soft brush to remove lint and dust from the bobbin area, feed dogs, and needle plate.
• Wipe the exterior of the machine with a soft, dry cloth. Avoid using harsh chemicals.

2. Needle Replacement

• Replace the needle regularly, especially after 8-10 hours of sewing or if it becomes bent or dull.
• Use the correct needle type and size for your fabric to prevent skipped stitches and fabric damage.

3. Oiling

Refer to your machine's specific instructions regarding oiling. Some modern machines are self-lubricating and do not require user oiling.

Troubleshooting

This section addresses common issues you might encounter while using your Bernette B37.

1. Skipped Stitches

• Ensure the needle is inserted correctly and is not bent or dull.
• Check if the correct needle type is being used for the fabric.
• Re-thread the machine completely, both upper and bobbin threads.

2. Thread Breaking

• Verify that the machine is threaded correctly and the thread tension is appropriate.
• Check for burrs or rough spots on the needle, needle plate, or bobbin case.
• Ensure you are using good quality thread.

3. Fabric Not Feeding Properly

• Ensure the presser foot is lowered.
• Check if the feed dogs are engaged (not lowered for free-motion sewing).
• Adjust the presser foot pressure if your machine has this feature.

4. Machine Not Starting

• Check if the power cord is securely plugged into both the machine and the outlet.
• Ensure the main power switch is turned on.
• Verify that the bobbin winder spindle is pushed to the left (sewing position).

Specifications

Warranty and Support

Warranty Information

The Bernette B37 typically comes with a 2-year warranty. Please refer to your purchase documentation or contact the retailer for specific warranty terms and conditions, as these may vary.

Customer Support

For technical assistance, service, or inquiries not covered in this manual, please contact Bernette customer support or your authorized Bernette dealer. Contact information can usually be found on the manufacturer's website or in your product packaging.