Question about Bernina Virtuosa 150

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Timing for Bernina Virtuosa 153

Bobbin thread will not catch. I have tried changing needles, cleaning etc. If I move the needle down it works for a few stitches but they look terrible. Can you give me timing instructions for my machine?

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  • San16 Jun 04, 2008

    Hi!  I have a Virtuosa 150.  When I sew the bobbin thread isn't catching.  It will catch then skip the next few stitches then catch, etc.  I have clean the bobbing casing, changed needles, rewound the bobbin and everything else I can think of but it still won't sew properly?  Help!


    Sandi

  • Missangip Jun 20, 2008

    Thanks so much Rick and let me tell you, you were so right! We tried to fix it our selves with timing instructions from another member and ended up breaking the head off a screw. We had to send it back to Bernina for repair which cost $300! Thanks for your help!

  • Anonymous Mar 12, 2014

    needle bar and hook are out of time.whats the height of bar at down stroke?

  • Anonymous Mar 26, 2014

    The instruction manual does not give these instructions

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  • 202 Answers

Timing these machines gets pretty involved such as in just removing the covers. You need a grounding ******** your wrist as the cables all need to be unplugged and you don't want to send a static charge from yourself to the circuit boards. They are expensive. Then you need special sized metal pins to pin several pinning points so the needle, hook, stepping motors and feed dogs all co-ordinate with each other. Also several places need certain guages to set less than .1 millimeter size distances between different places to avoid other problems. You also need several sized torx screwdrivers and the knowledge to adjust the upper and lower tensions. The upper tension alone has at least 3 or four places that need to be in the correct position.
All of the above has to be done in a certain order also.
Its complicated enough. If someone is going to walk you through this over the phone expect it to be complicated. Even if you had a copy of the manual (which could be a copywrite infringment on newer machines) you can expect it to be difficult.
My advice is to leave it to the professionals to have it done right.

Posted on Jun 20, 2008

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1 Answer

Bottom stitch skips stitches


MY FIRST THOUGHT IS THE TIMING IS OFF A LITTLE. BEFORE SPENDING YOUR HARD EARNED MONEY FOR A REPAIRMAN TRY THESE POSSIBLE CURES:
1. TRY TO SEW WITH THE NEEDLE ALL THE WAY TO THE LEFT AND THEN TRY IT ON THE RIGHT. IF ONE OF THE TWO SEWS BETTER THAN THE OTHER YOU CAN BE ASSURED IT IS THE TIMING WHICH MEANS YOU NEED A REPAIRMAN.
2. JUST FOR GOOD HABITS DO THESE BEFORE GOING TO THE REPAIRMAN: CHANGE NEEDLE AND THOROUGHLY CLEAN THE BOBBIN AREA WITH CANNED AIR AND A QTIP TO CLEAN DIRT OUT. AFTERWARDS PLACE A DROP OF SEWING MACHINE OIL ON THE RACE THAT YOUR BOBBIN CASE FALLS IN.
3. PLACE TWO INCHES OF THREAD UNDER THE PRESSER FOOT. TURN THE HAND WHEEL TOWARDS YOURSELF AND WATCH IF THE UPPER THREAD WRAPS ON TOP OF THE BOBBIN CASE WHILE THE NEEDLE IS RISING. THE THREAD SHOULD PULL AROUND THE BOBBIN CASE WITHOUT CATCHING ON THE BRACKETS THAT HOLD THE BOBBIN CASE. IF IT DOES CATCH A LITTLE BIT YOU MAY NEED TO MOVE THE BRACKET AWAY FROM THE BOBBIN CASE ABOUT ONE PAPER WIDTH.

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3. The wrong size needle is being used

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Hello,
Here are a few things to try.

* Re-thread your needle
It may be threaded incorrectly (backwards).

* Reinsert your needle
Make sure it goes all the way into the holder and that it’s positioned correctly – usually with the flat side away from the bobbin, but consult your machine’s manual to be sure.

* Change your needle
Your needle may be blunt, bent, or otherwise damaged.

* Your fabric may require a different needle. Generally, heavier fabrics require larger needles and thinner fabrics, smaller needles. You may also need a larger needle if you’re sewing through many layers of fabric. And make sure to use a ballpoint needle for knit fabrics and a sharp needle for wovens or a universal needle for either. Make sure your needle is appropriate for the type of thread you’re using.

* Adjust the pressure of your pressure foot
It may be too light for your fabric.

* Change your thread
If your upper thread and bobbin threads are different types, try using the same thread for
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* Adjust your thread tension
It may be too tight or too loose.

* Re-thread your machine
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* Change your needle plate
Try switching to a needle plate with a smaller hole (a straight stitch needle plate).

Important Note:
After changing your needle plate, check to make sure your needle aligns perfectly with this smaller hole before starting to sew. A misaligned needle could hit the plate and break, which
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Suspect the needle and hook timing is off causing threads not to catch to make a stitch.

Try these troubleshooting tips:
With machine off, remove the bobbin and bobbin case. Push the needle bar to the left. Lower the needle to the bobbin case and notice when the needle starts traveling upward does the tip of the hook in the bobbin area align with the eye of the needle? If it does not align, the timing is off. If it does, move on to check upper tension:

Check that it is threaded correctly (both top and bottom) making sure that the upper thread is in the takeup lever. Watch the needle as you slowly turn the handwheel counter clockwise (toward you) and the needle point touches the fabric (make sure presser foot is down). Is the thread still relatively taunt? If it is loose, the upper thread tension unit does not have enough tension. Check the areas where the thread goes and make sure you remove any loose threads or fluff which could be inhibiting the tension discs from closing over the thread. If the tension unit still is not tightening enough, the tension unit may need to be replaced or the circuit board replaced. If everything is ok in the upper thread area, now look at the bobbin area. With no fabric, watch as the needle enters the bobbin area. Does it go down and the upper thread catch the bobbin thread and pulls it to the surface? Check for anything preventing the bobbin thread from being pulled up to the surface through the needle plate. If you have still not been able to resolve the problem suggest you take it to an authorized husqvarna viking dealer for service. You can locate a dealer near you by visiting the husqvarna viking website and clicking on the Dealer link on the left-hand side of the page - http://www.husqvarnaviking.com

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