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Timing a viking 990

Hi. Can you tell me how to time the rotary hook on a viking 990 sewing machine? It has a vertical hook.
Thank You, Karen Williamson

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Impossible to explain how to time a sewing machine you need to be shown. Basically it entails setting the needle depth then making sure the hook passes just above the eye of the needle at a set height as the needle is rising, this ensures the hook catches the upper thread. Also the hook needs to be set a specific distance from the needle. Sounds easy but sometimes it can be very difficult and fiddly job.

Posted on Apr 02, 2008

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Where can I find parts for a Viking 990S?

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My needle has started hitting on the bobbin case in the mahine,can anyone tell me how to fix this problem.

Could be a couple of things:

Could be a bent needle? please change it for a sharp new one and make sure it goes in correctly, flat shank to the back.

Bobbin case dislodged or not in correctly ; I think these are vertical rotary hook machines with the bobbin inside a removeable bobbin case? Check that you have put the case in correctly, there is usually a long finger on the case that latches into a point on the rotary hook, holding the case in the correct position. Probably also a latch on the front of the bobbin case, which you use to fit it into place and remove it.

Lastly could be that the machine timing is out. Manually turn through a stitch sequence with no thread or bobbin, the needle needs to be at its lowest point down into the bobbin area when the rotary hook brings the thread around to catch at the back of the needle.

If you suspect it is the timing, you may want to get a technician to do this repair but certainly try the first two items first.

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