Q: How do I install the bobbin on my VALBERG VB-MAC sewing machine?

Bobbin installation: Lift the presser foot lifter Open the bobbin cover by pushing the release button to the right Insert the bobbin into the case, ensuring that the thread unwinds counterclockwise Close the cover Important: Only use metal bobbins of type 15K. Plastic or transparent bobbins do not provide the correct tension with the magnetic system of this machine. Your VALBERG VB-MAC comes with 2 metal bobbins. Lower thread pulling: Hold the upper thread with your left hand and turn the handwheel towards you with your right hand to lower and then raise the needle to its highest position. Pull the upper thread upwards to draw the thread from the bobbin through the needle plate.

Q: How to use and change the presser foot on the VALBERG VB-MAC sewing machine?

The presser foot lifter is located in area C of your VALBERG VB-MAC machine. Before threading the machine or removing fabric, you must always lift the presser foot lifter to release the tension. Once the fabric is positioned under the presser foot, lower the lifter to hold the fabric in place while sewing. Usage during sewing: After lowering the lifter, the presser foot holds the fabric against the feed dogs, allowing for a steady advancement of the fabric. Do not try to pull or push the fabric while sewing, as this could cause the needle to deviate and break. Simply let the machine feed the fabric naturally. Removing the presser foot: To change the presser foot, start by fully lifting the presser foot lifter. Then, press the release lever located at the back of the presser foot holder to free the current foot. Once released, you can remove the presser foot. Installing a new presser foot: Lift the presser foot lifter. Carefully align the new presser foot under the holder by positioning the foot correctly. Then lower the presser foot lifter until the cutout of the holder is directly above the fixing pin. The presser foot will automatically snap into the locked position. Tension adjustment: The quality of your stitches also depends on the adjustment of the thread tension dial, numbered from 1 to 9. Positions 3, 4, and 5 (marked with a small square) constitute the optimal adjustment range for most stitches. Too high a tension will cause tight stitches and fabric puckering, while too low a tension will produce loose stitches. Always test the tension on a piece of identical fabric before starting your project.

Question 1

How do I install the bobbin on my VALBERG VB-MAC sewing machine?

Accepted Answer

Bobbin installation:

Lift the presser foot lifter
Open the bobbin cover by pushing the release button to the right
Insert the bobbin into the case, ensuring that the thread unwinds counterclockwise
Close the cover

Important: Only use metal bobbins of type 15K. Plastic or transparent bobbins do not provide the correct tension with the magnetic system of this machine. Your VALBERG VB-MAC comes with 2 metal bobbins.

Lower thread pulling: Hold the upper thread with your left hand and turn the handwheel towards you with your right hand to lower and then raise the needle to its highest position. Pull the upper thread upwards to draw the thread from the bobbin through the needle plate.

Question 2

How to properly install the thread on a VALBERG VB-MAC sewing machine?

Accepted Answer

To properly install the thread on your VALBERG VB-MAC sewing machine, you must first perform the essential preparations. Set the power switch to OFF and unplug the machine from the power outlet. Then raise the needle to its highest position by turning the handwheel towards you (counterclockwise) until the needle just begins to descend. Be sure to lift the presser foot lifter, as failing to do so may cause thread jams under the fabric while sewing.

Start by correctly installing the spool of thread. Lift the spool holder and insert the base of the spool, then the spool of thread with its cap. The thread must be oriented towards the back. Pull the thread slightly from the left to ensure that the spool turns counterclockwise. If your spool is small, you can lower the spool holder to a horizontal position; if it is large, keep it in a vertical position and loosen or remove the spool cover so it does not hinder rotation.

Proceed to thread the upper thread by following this specific path for the VALBERG VB-MAC. While firmly holding the spool on the spool holder with your right hand, take the thread with your left hand and follow these steps: 1) Pass the thread under the slot to the right of the thread guide, then through, and wrap it around the tension guide. 2) Pull the thread down and insert it into the groove to the right of the front panel to pass it between the tension discs. 3) Make a half turn around the bottom of the front panel. 4) Pass the thread through the thread lifter, from right to left. 5) Pass the thread in the thread guide above the needle. 6) Thread the needle from front to back.

After threading the upper thread, you need to prepare the lower thread. This machine requires the use of metal bobbins of type 15K: using transparent bobbins or other types will not provide the correct tension. Ensure that your metal bobbin is correctly wound and inserted into the case with the thread unwinding counterclockwise.

Finish by pulling the thread from the bobbin. Lift the presser foot lifter, open the bobbin cover by pushing the release button to the right, then insert the bobbin into the case. Hold the upper thread with your left hand and turn the handwheel towards you with your right hand to lower and then raise the needle to its highest position. Pull the upper thread upwards to pull the bobbin thread through the needle plate. You are now ready to sew with your VALBERG VB-MAC.

Question 3

What should I do if my VALBERG VB-MAC sewing machine won't sew?

Accepted Answer

If your VALBERG VB-MAC sewing machine won't sew, several simple checks can resolve the issue. Here are the steps to follow as a priority:

Power check: First, ensure that the machine is properly powered. Use the power adapter provided with the device and check that it is plugged into a functional outlet. The power cord should be in good condition, with no visible damage.

Inspection and correct insertion of the needle: The needle must be fully inserted into the holder with the flat side facing the back of the machine. A poorly inserted needle will prevent the machine from creating stitches. Also, check that the needle is not bent, broken, or dull. If it is, replace it immediately with a new one.

Correct threading of the thread: Before threading, always lift the presser foot lifter to release the tension discs. Then thread the upper thread through all the guides and into the needle's eye. To check that the threading is correct, lift the presser foot and pull on the thread: it should pull easily. Then lower the presser foot; the thread should resist when you pull it. If there is no increase in tension, re-thread it.

Check the bobbin: Ensure that the bobbin is not empty and that you are using only metal bobbins (type 15K). Never use clear or plastic bobbins, as they will not provide the correct tension and will prevent the machine from functioning properly. The bobbin case is magnetized; only a metal bobbin can achieve the correct tension.

Adjusting the thread tension: Set the thread tension dial to a value between 3 and 5 to start, which is suitable for most tasks. Tension that is too tight or too loose will cause uneven stitches or thread breakage.

Check the presser foot: Ensure that the presser foot is lowered before you start sewing. A presser foot that is too loose can prevent the machine from functioning. If the problem persists after these checks, stop using the device and contact an authorized repair center.

Question 4

Why is my VALBERG VB-MAC.2 sewing machine not forming stitches correctly?

Accepted Answer

If your VALBERG VB-MAC.2 sewing machine is not forming stitches correctly, several causes may be responsible. Here are the main points to check to resolve this issue:

1. Threading Check

Make sure that the upper thread is properly threaded according to the path indicated on the machine, and that the bobbin thread is correctly installed in its case. Incorrect threading prevents stitch formation.

2. Thread Tension Control

The upper thread tension must be adjusted correctly. If it is too loose or too tight, the stitches may not form or may be irregular. Adjust the tension dial according to the fabric and thread used.

3. Needle Condition and Position

Check that the needle is properly installed, straight, and suitable for the type of fabric. A bent, dull, or improperly positioned needle can prevent stitch formation.

4. Bobbin and Lower Thread

Ensure that the bobbin is correctly inserted and that the thread winds properly without blockage. A problem with the lower thread prevents the machine from making stitches.

5. Fabric Compatibility

Use a needle and thread suitable for the thickness and type of fabric. A fabric that is too thick or too thin may cause issues if not matched properly.

6. Sewing Speed

Try sewing at a moderate speed. Sewing too quickly can disrupt stitch formation.

7. Machine Maintenance

Regularly clean the machine to prevent dust, lint, or debris from blocking the mechanism. Insufficient maintenance can prevent proper sewing.

By following these tips, you should be able to resolve most issues related to stitch formation on your VALBERG VB-MAC.2 sewing machine.

Question 5

Why does the thread break on my VALBERG VB-MAC.2 sewing machine and how can I solve this problem?

Accepted Answer

The thread breaking on your VALBERG VB-MAC.2 sewing machine can have several causes, but they are generally related to the needle, thread tension, or threading. Here’s how to diagnose and fix this issue.

First, check the needle: Thread breakage is often caused by a bent, dull, or improperly positioned needle. Before doing anything else, replace the needle with a new one. Make sure the needle is inserted correctly with the flat side facing the back of the machine and pushed up as far as possible. Also, check that you are using the correct needle size for your fabric: 11/80 needles for lightweight fabrics, 14/90 for medium fabrics, 16/100 for heavy fabrics.

Check the upper thread threading: Incorrect threading causes thread jams and breakage. Turn off the machine and unplug it. Raise the presser foot lifter (very important). Raise the needle to its highest position by turning the handwheel towards you. Thread according to the path indicated on the machine: the thread goes under the slot to the right of the thread guide, wraps around the tension guide, descends into the tension channel, and comes back up on the other side. Perform this simple test: with the presser foot raised, the thread should slide easily when you pull; with the presser foot lowered, the thread should resist significantly. If there is no increase in tension, the threading is incorrect, start over.

Adjust the thread tension: On the tension dial (numbered 1 to 9), settings 3, 4, and 5 are marked with a small square and correspond to the recommended adjustment range for most stitches. If the thread breaks, loosen the tension by selecting a number within this range (3 to 5). Too high a tension causes breakage.

Check the bobbin: This VALBERG VB-MAC.2 machine uses only magnetized metal bobbins of type 15K. Never use clear or plastic bobbins, even if they seem to fit, as they will not provide the correct tension and you will have thread breakage issues. Ensure that the bobbin is correctly positioned: it should turn counterclockwise when the thread unwinds. Also, make sure the bobbin is not empty or poorly wound.

Check the presser foot: If the presser foot is too loose, the thread is not held properly and may break. Check that it is tight and in good condition.

Follow these steps in order: first replace the needle, then rethread the upper thread with the presser foot lifter raised, adjust the tension between 3 and 5, and check that you are using magnetized metal bobbins of type 15K. These checks eliminate most thread breakages.

Question 6

How to use and change the presser foot on the VALBERG VB-MAC sewing machine?

Accepted Answer

The presser foot lifter is located in area C of your VALBERG VB-MAC machine. Before threading the machine or removing fabric, you must always lift the presser foot lifter to release the tension. Once the fabric is positioned under the presser foot, lower the lifter to hold the fabric in place while sewing.

Usage during sewing: After lowering the lifter, the presser foot holds the fabric against the feed dogs, allowing for a steady advancement of the fabric. Do not try to pull or push the fabric while sewing, as this could cause the needle to deviate and break. Simply let the machine feed the fabric naturally.

Removing the presser foot: To change the presser foot, start by fully lifting the presser foot lifter. Then, press the release lever located at the back of the presser foot holder to free the current foot. Once released, you can remove the presser foot.

Installing a new presser foot: Lift the presser foot lifter. Carefully align the new presser foot under the holder by positioning the foot correctly. Then lower the presser foot lifter until the cutout of the holder is directly above the fixing pin. The presser foot will automatically snap into the locked position.

Tension adjustment: The quality of your stitches also depends on the adjustment of the thread tension dial, numbered from 1 to 9. Positions 3, 4, and 5 (marked with a small square) constitute the optimal adjustment range for most stitches. Too high a tension will cause tight stitches and fabric puckering, while too low a tension will produce loose stitches. Always test the tension on a piece of identical fabric before starting your project.

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