Question about Husqvarna Viking 1
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Posted on Jan 02, 2017
If you machine is looping on the bottom of the fabric try the following.
1. Remove the thread from the top of the machine and retrhead it. Also make sure the presser foot is in the up position when you thread the top because the tension discs separate when the foot is up, so the thread can get deep into the tension unit where it belongs.
2. Replace the needle. They can be bent and still look straight, which can cause a whole bunch of problems.
3. Take out the bobbin and inspect the edges of the bobbin. Make sure it's smooth. When replacing it back into the machine, make sure to thread the tensioin area of the case correctly. You should hear a small "click" when you drag the thread into the metal guide. You enter the guide in the 6 O'clock position and pull the thread to the 7 O'clock position. You should alway see the thread laying across the top of the bobbin through the clear bobbin cover when it's threaded properly. (After you've taken a few stitches on a sample fabric, look through the cover, that's when you can see the thread laying across the bobbin.)
4. Make sure your tension is between 4 and 5.
5. When the bobbin thread is pulled up through the needle plate, you can pull it gently towards the back of the machine to feel how much tension is on the thread and to see if the bobbin rotates freely in the case. If while a bobbin is being wound, the thread has any difficulty being delivered to the bobbin, it can cause the bobbin's shape to distort. It then will have trouble spinning in the bobbin case correctly which will make a very ugly stitch. If you've ever had trouble getting a bobbin off the spindle, the thread delivery was compromised and it was being delivered to the bobbin with too much tension on it and it basically crushed the center post of the bobbin onto the winder making removeal difficult. Sometimes the only way to remove the bobbin from the spindle if that happens, is to take the thread off the bobbin and start again.
Posted on Oct 14, 2009
I can get you the service manual for your 770, but you are going to need some fairly specialized tools, meters and gauges to do any repairs.
In 37 years of servicing sewing machines, I've seen lots of machines worked on by backyard mechanics; some are ruined, some are repairable, ALL cost much more to repair after you tinker with them.
Posted on Feb 11, 2010
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