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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
kfwilli@hughes.net

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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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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.

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