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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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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First the simple solution. Make sure your needle is inserted flat side to the back and all the way up.
The only other thing I can think of is that your hook is out of time and this will take a technician to re-time it. You may need to take it in for a servicing.

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Your machine is out of time. It would be best to have a tech adjust the timing.

Jun 01, 2008 | Bernina Virtuosa 150

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Bobbin thread not being picked up


This unfortunately sounds dismally like a timing problem. When a sewing machine makes a sudden mechanical stop as when a needle is bent slightly and hits the needle plate, sometimes the other machine bits revolve along further causing the needle to be introduced into the hook either to early or to late to catch the thread.

To test this, remove the thread, the needle plate and and the bobbin case. Replace the needle with a brand new one. Yes, again. Revolve the machine by hand via the balance wheel and watch closely as the needle goes into the hook region allow it to it move down and then just start to move up. If the tip of the hook is not pretty close to right behind the needle than it is more than likely a timing problem.

If the tip of the hook is behind the needle in the scarf (the slight hollow on the back of the needle) than it is not timing. Thread the machine normally like it is and watch what happens as you manually turn the machine via the balance wheel. The thread should catch and be pulled around the hook and let go.

Try this and then either you figured it out the problem or contact me again. Either way please vote. Thanks

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