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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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Hi! I am looking to buy a used sewing machine, and I'm currently trying to figure out what is the difference between a viking prisma 980 and a viking prisma 990. What are the differences?

Be sure to check these machines out very carefully. They have electronic boards that, after 25-30 years, may be nearing their end of life with very few or no replacements available.

Jul 25, 2017 | Sewing Machines

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Where can I obtain a Viking 990 instruction manual

You can download one here

They sell them here $4.99

Apr 13, 2017 | Sewing Machines

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Can you tell me the bulb specs on Prisma 990 opto-coupler bulb NO.411 83 87-02? It is no longer availlable and Husqvarna Viking said they can't give me the information other than the number and that it is...

try to find a very old sewing machine dealer or a family dealer - you would be amazed what you find in these old stores. just have the patience to go from one to another until you find something!

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How do I reassemble the bobbin/rotary hook area of a Husqvarna Viking 120 sewing machine?

Just a thought check that your needle is in properly it makes a differene

May 17, 2014 | Husqvarna Viking 1

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Where can I find parts for a Viking 990S?

Most Viking dealers or repair shops should be able to get parts for you. Some that I know of that are available online are:
Ron Anderson at A1 sewing is someone I've known for about 20 years on the net... he's always been helpful to DIYers on the usenet group "alt.sewing", and has a good reputation as a source of parts: -- I'd try him if you don't have a good local repair shop.
IIRC, the 990 is electronic, and you may not be able to find boards for it anymore.
And FWIW, I mostly sew on a Juki F-600; like the old Vikings, it just works.

Apr 29, 2014 | Husqvarna Sewing Machines

1 Answer

Viking 6440 needle hitting rotary hook

it would be a good idea to have the machine check at a sewing
mmachine shop to see if the machine is out of time

Jun 06, 2012 | Husqvarna Sewing Machines

1 Answer

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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1 Answer

Machine is skipping stitches

One of the things that can cause this is lint buildup around the back of the hook driver. Open the bobbin cover and look just above the hinge, at the bottom edge of the black hook cover. If lint is peeking out at you, it may be time to have it serviced. You may be able to get most of the lint out if you remove the needle plate and blow onto the back side of the hook area with canned air. Keep the cover open so the lint can come out.
Now I am assuming that you have replaced the needle.

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When the thread breaks too often, try these, that goes for all sewing machines
1. Replace the needles,
2. Loosen slightly the tension of the needle threads.
3. The top threads are to thin,
4.The sewing (rotary) hook or looper, has burs,
5. Wrong threading

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2 Answers

Timing of viking

When the needle eye finishes the downstroke and starts upwards, the eye of the needle should be directly in front of the hook , when the needle is in the furthest left position.

Apr 02, 2008 | Sewing Machines

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