Question about Bernina Virtuosa 160

3 Answers

Bernina Virtuoso 160 Whilst sewing a buttonhole, the second bead stitches for about 20 stitches and then fails to continue feeding backwards. Hence clumping of stitches in one place and a failed buttonhole.

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  • estherreid99 Jun 24, 2009


    Thank you for your reply.

    I think maybe I got someone elses solution.

    You sent me a solution to resolve a thread track problem. My problem seems to be with automatic buttonholer.

    Thank you for your advice.

    Esther Reid.



  • Rick Beament Oct 13, 2011

    Are you using a 3A foot - if so, it sounds like the automatic calibration may have gone out. But before that, ensure that the buttonhole sensor is clean ... put your machine carefully on its back so you can see the bottom of the head mechanism (where the needle and foot are fixed. Look carefully to the right of the needle bar and you will see a small round lens and a similar, but flat lens next to it - these comprise the sensor and work with the two lenses on the top of your 3A foot. Use a cotton bud to gently clean the optical parts of the sensor, being very careful not to push it hard - on some models, you can inadvertently push the sensor up into the head, then it wont work at all! Once you've cleaned it, re-check whether its working. If it's still not working, it will have to be re-calibrated - unfortunately, on your machine, this requires a filter to be fitted between the sensor and the foot, so it will need to go to a proper service agent. I am based in Devon !!!



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Make sure you use the buttonhole foot or one with clearance underneath to allow stitching to pass freely under the foot.

feed dogs may need to be raised.


Posted on Jul 27, 2009

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Unplugg it for 20 mins from outlet and try again if its still does the same thing check the bobine.

Posted on Jun 25, 2009

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Remove the needle plate, bobbin case and hook.
Oscillating Hook System only: Remove the hook.
􀁸􀀃 With a lint brush clean
around the feed dog,
the hook/hook race
and the surrounding
area of the hook.
Oscillating Hook
System only: Clean
the hook.
􀁸􀀃 Clean the bobbin case.
􀁸􀀃 Lift the presser foot bar
and with lint brush
clean each side of the
top tension discs.
Lower the presser foot
bar and use a length
of buttonhole twist or
cordonnet to floss
each side of the top tension discs. Check take-up
lever for jammed thread ends; remove if possible.
􀁸􀀃 Oscillating Hook
System only: Reinstall
the hook.
􀁸􀀃 Place one drop or
two drops of oil in the
areas shown, or as
indicated in your
BERNINA Guide and
Instruction Manual.
􀁸􀀃 Reinstall the bobbinCASE

Posted on Jun 19, 2009

  • 1 more comment 
  • mohammed marika thambi
    mohammed marika thambi Jun 19, 2009

    It sounds to me as if your machine has a sensor problem. You will need
    to take your machine to an authorized dealer/repairmen- they are
    the only ones who will look at your machine.

  • mohammed marika thambi
    mohammed marika thambi Jun 19, 2009

    Take the back of the machine off and heat the inside of the machine with a hair dryer.

  • mohammed marika thambi
    mohammed marika thambi Jun 19, 2009

    Take the back of your machine off and hold a hair dryer to it until the button frees up.


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