Sonata -1 machine fixed-I did it!!!!
 

Hello,
Well I have fixed one of the 2 Sonata 6610 machines that I had posted about before. After several well intended people told me to forget trying to fix it, I decided to try myself. I am a Chemist and studied physics as well. My Grandfather was a mechanical engineer, and used to call me his little engineer. Although he passed many many years ago, I could not get his voice out of my head.

The fix: First after struggling (like many youtube videos said) to get the cover off, I cleaned it out gently by blowing, and oiled the heck out of everything. Ran the mechanics well until it was running smooth.

Second: tension issue/bird nesting-----After making sure that the motor and all parts was running smoothly--nothing broken, no plastic parts were chipped etc, I turned to the bobbin area. There is a metal plate with a little notch that had 3 screws in it. It sat under the bobbin area cover, and the bobbin casing slides under it. I have no idea what the real name is for it. The plate slid left to right, moving how much it pressed on the bobbin casing. I had to slide this plate to just the right position to keep the bobbin casing from bouncing around, but also not to tight to prevent it from spinning. I am now sure that this was the cause of the bird nesting.

One down one to go!!!! New thread about that second Sonata issue to follow.

woooo hooo way to go

Wonderful! Never say Never. I am so glad you got one done and one to go. Let us know when the second one is up and going. Congratulations on the first one.

That's great! You get such a sense of accomplishment bringing one of these "old gals" back to full function. :)

That's terrific!! Glad you gave it a try and succeeded.

Congratulations. Doesn't it feel good?

I didn't realize the bobbin case had three screws, generally I thought it was only 2. I don't remember quite what my niece's machine bobbin case holder was like. If your manual is like the one I downloaded from Singer, It looks like it would be chapter 9 of the manual "Caring for Your Machine" that tells how to remove and replace the bobbin case.

Janey - Neat people never make the exciting discoveries I do.

That’s great! I was kind of sad about the negative responses to your other post.

Great!! I'm a big fan of trying to fix something first before tossing it.