SOURCE: Bernina Virtuosa 160
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.
SOURCE: I need to know if
We have a guide to telling if your machine takes a high or low shank here:
Sewing Machine Presser Feet
SOURCE: I have a Bernina Virtuosa 155 and use it daily. Without
In checking I can either adjust the tenion screw and if that does not work, purchase a new bobbin case.
SOURCE: Does this machine have a low shank --- or high
High Shank Machines are all the Janome Embroidery models MC 8000, MC 9000, 10000, 10001, 11000, 200E, 300E, 350E....etc
If yours is not an embroidery machine, it has a LOW SHANK .....the higher shank allows for easier access for the embroidery hoop
Bargain Box
SOURCE: bernina virtuosa 155 solutions
Needle threader heads are actually easily replaced and should be replaced anyway every few years because they do wear-out. Get a magnifying glass and, having returned the needle to the top (use the foot controller, so that the machine stops it in the right place), pull the needle threader down until the head rotates towards the needle. Look with the magnifying glass to see if the small hooked part in the centre of the threader head (the light grey plastic part) goes through the eye of the needle - if not, you might be able to bend it VERY carefully so that it does - that should cure it. If the hook is a long way above or below the needle eye, dont try and bend it, the cam that rotates the threader has probably moved on the needle bar and will need adjustment by a service agent. If the hook is passing through the eye of the needle OK, but still not pulling the thread back through when you release it - i.e. the thread is just slipping-off, the hook has become rounded through normal wear and you'll have to replace the threader head. The threader head simply pulls off - you might need to carefully lever it off the round shaft. Replacing it is a matter of simply putting the new one on the shaft and pressing upwards firmly so that the grooves in the threader head go right up to the horizontal pin on the threader shaft.
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