What to do if my Bernette b77 is skipping stitches?
To resolve skipped stitches on your Bernette Sewing Machine: * Use the needle system 130/705H. * Replace the needle if it is blunt or bent. * Use a new BERNINA quality needle. * Insert the needle with the flat side to the back as far up as it will go into the needle holder and tighten the screw. * Match the needle point to the texture of the material.
How to fix uneven stitch formation on my Bernette b77?
To fix uneven stitch formation on your Bernette Sewing Machine, consider the following: * Adjust the upper thread tension if it's too tight or loose. * Replace the needle if it's blunt or bent, ensuring you use a new BERNINA quality needle. * Use quality thread and match the needle with the thread size if the combination is incorrect. * Rethread the machine if it's incorrectly threaded. * Feed the fabric evenly if it has been pulled. * Remove any dust or thread remnants from under the tension spring of the bobbin case.
What causes needle breaks on my Bernette b77?
To correct needle breaks on your Bernette Sewing Machine: * Insert the needle with the flat side to the back as far up as it will go into the needle holder and tighten the screw. * Feed the fabric evenly if it has been pulled. * Use the appropriate presser foot, e.g. Jeans foot No. 8 for thick material if thick fabric has been pushed. * Use quality thread if the thread is knotted.
Why does the upper thread keep breaking on my Bernette b77 Sewing Machine?
When the upper thread breaks on your Bernette Sewing Machine, it could be due to several reasons. You may have an incorrect needle/thread combination, so ensure they are properly matched. The upper thread might be too tight; try reducing the tension. It could also be incorrectly threaded, so rethread the machine. Using poor quality thread can also cause breakage, so switch to a quality thread. If the stitch plate or hook tip is damaged, contact a specialized Bernette dealer to repair the damages or replace the stitch plate.
What to do if the display is inactive on my Bernette b77 Sewing Machine?
To address a Bernette Sewing Machine display that is inactive: * Switch the machine off if the calibrating data is incorrect. * Switch the machine on and simultaneously press and hold down the buttons «Needle Left/Right». * Recalibrate the display. * Tap «eco Mode» if the eco Mode is active.
Why is the stitch width not adjustable on my Bernette Sewing Machine?
To resolve the issue of the stitch width not being adjustable on your Bernette Sewing Machine: * Replace the needle if the selected needle and stitch plate cannot be used in combination. * Replace the stitch plate.
Why is the speed too low on my Bernette Sewing Machine?
To address the issue of the speed being too low on your Bernette Sewing Machine: * Place the machine in a warm room one hour before use if there is an unfavorable room temperature. * Adjust the sewing speed in the Setup Program. * Adjust the slide.
Why is my Bernette b77 producing faulty stitching?
Faulty stitching on your Bernette Sewing Machine can be caused by a few things. Thread remnants might be caught between the thread tension discs; fold a piece of thin material and slide the folded edge between the thread tension discs to remove them. The machine might be incorrectly threaded, so rethread it. Thread could also be caught in the hook; remove the upper thread and the bobbin case, then turn the handwheel backwards and forwards by hand to remove any thread remnants. Finally, check that you're using the correct needle/thread combination.
Why does the needle keep breaking on my Bernette Sewing Machine?
If the needle breaks on your Bernette Sewing Machine, it could be due to a few reasons. Ensure the needle is correctly inserted with the flat side to the back, as far up as it will go into the needle holder, and tighten the screw. Avoid pulling the fabric; instead, feed it evenly. If you're sewing thick fabric, use the appropriate presser foot, such as Jeans foot No. 8, and use the height compensating tool when sewing over a thick seam. Finally, knotted thread can cause the needle to break, so use quality thread.
What causes the lower thread to break on my Bernette b77 Sewing Machine?
If the lower thread breaks on your Bernette Sewing Machine, there are several potential causes. The bobbin might not be inserted correctly; remove and reinsert the bobbin, ensuring the thread runs easily. The bobbin could also be wound incorrectly, so check the bobbin and thread. A damaged stitch hole in the stitch plate can also cause this issue; contact a specialized Bernette dealer to have the damages repaired or replace the stitch plate. Lastly, a blunt or bent needle can contribute to thread breakage, so replace the needle.
General| Sewing Speed | 1000 stitches per minute |
|---|---|
| Screen | 5-inch color touch screen |
| Needle Positions | 15 |
| Maximum Stitch Width | 7 mm |
| Maximum Stitch Length | 5 mm |
| USB Port | Yes |
| LED Sewing Light | 4 LEDs |
| Memory | Yes |
| Start/Stop Button | Yes |
| Bobbin System | Drop-in |
| Type | Computerized |
| Buttonholes | 17 |
| Presser Feet | 8 included |
| Speed Control | Yes |
| Drop Feed | Yes |
| Free Arm | Yes |
| Presser Foot Lift | Manual & Automatic (2-level) |
| Feed Dogs | 7 |
Essential safety rules for machine operation, environment, and condition.
Safety recommendations for using accessories and supplies with the machine.
Guidelines on proper machine use, cleaning, maintenance, and supervision.
Information on obtaining and using the short and detailed instruction manuals.
Defines intended use for private household purposes and liability.
Notes on illustrations, accessories, and potential product changes.
Instructions and precautions for servicing double-insulated machines.
BERNINA's commitment to environmental protection and machine disposal guidelines.
Defines hazard symbols (DANGER, WARNING, CAUTION, NOTICE) used in the manual.
Identification of machine parts and controls on the front, top, and back.
Lists and describes included accessories for the sewing machine.
Explanation of the machine's display, icons, and interface functions.
Guidance on selecting and using needles, threads, and fabric types.
Steps for connecting the power cable, foot control, and turning the machine on.
Instructions for using the horizontal and second spool pins.
Description of the freearm and its benefits for sewing projects.
How to attach, remove, and use the sewing table and accessory box.
Instructions for operating the feed dog lever.
Guide on attaching and removing the slide-on extension table.
Adjusting presser foot position and changing presser feet.
Procedures for changing needles and stitch plates.
Step-by-step instructions for threading the upper thread and twin needle.
Configuring sewing parameters like thread tension, speed, and securing stitches.
Customizing display color and other personal preferences.
Activating thread indicators for monitoring sewing.
Enabling or disabling machine sounds.
Adjusting display brightness, sewing light, and calibrating the screen.
Engaging the energy-saving mode for extended idle periods.
Using the consultant for project advice on fabric, needles, and feet.
Resetting design alterations to default settings.
Navigating the stitch selection menus for patterns, alphabets, and buttonholes.
Instructions on applying and using the dual feed mechanism for even fabric feeding.
Adjusting the sewing speed using the control slide.
Fine-tuning upper thread tension for different fabrics and threads.
Modifying stitch width, length, balance, and pattern repeat.
Creating, editing, and managing combinations of stitch patterns.
Saving, overwriting, loading, and deleting stitch patterns in personal memory.
A catalog of practical stitches with names and descriptions.
Guidance on sewing a straight stitch with length adjustment.
Using the automatic securing program for reinforcing stitches.
Step-by-step instructions for sewing zippers.
Techniques for sewing durable triple straight stitches.
Using triple zigzag stitches for firm fabrics and hems.
Performing manual darning on fabric holes and worn areas.
Using automatic programs for reinforced darning.
Finishing fabric edges using zigzag stitches.
Creating double overlock seams for knit and woven fabrics.
Sewing overcasting stitches to prevent fraying.
Using the seam guide for precise edgestitching.
Creating narrow hems with a specialized foot.
Instructions for sewing invisible blind hems.
Sewing visible hems on elastic fabrics.
How to sew basting stitches for temporary seams.
Techniques for sewing through thick fabric layers.
Techniques for sewing neat corners by pivoting the fabric.
Introduction to decorative stitches and their suitability for different fabrics.
Adjusting stitch density for satin stitches to control spacing.
Techniques for sewing cross stitches for decorative effects.
Introduction to available block, double-block, and script alphabets.
Steps for creating custom lettering and text using the machine's alphabets.
Catalog of buttonhole types and their applications for different fabrics.
How to mark buttonhole positions on the fabric accurately.
Step-by-step guide to sewing automatic buttonholes.
Techniques for reinforcing buttonholes, especially on stretch fabrics.
Using the machine to sew on buttons with two or four holes.
Instructions for sewing decorative eyelets.
A list of various quilt stitches and their intended uses.
Using the securing program for quilting stitches.
Techniques for achieving a hand-sewn look with quilt stitches.
Tips for free-motion quilting and guiding fabric with specialized feet.
Recommended intervals and importance of cleaning and maintenance.
How to safely clean the machine's touch display.
Procedures for cleaning the feed dog and removing debris.
Steps for cleaning the hook and shuttle race area.
Instructions for lubricating the needle bar for smooth operation.
Common faults, their causes, and suggested repairs for stitch formation issues.
Explanations of error messages displayed by the machine and their solutions.
Details on LED light power and maximum sewing speed.
Physical measurements and weight of the machine and accessory box.
Information on power consumption and input voltage requirements.
Specifies the electrical protection class of the machine.
Visual index of all practical, buttonhole, decorative, and quilt stitches.
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