Forgive me for being cranky ! It's a long story

I would not do that! The case is driven by electronics and you don't have the equipment to calibrate it back. You would be better served taking the machine to your technician. You might even void your warranty if you tried to dismantle any inner workings of your 830.

Good luck !

I tried the nifty little tool, some of the thread came out, I need to remove the case that holds the bobbin. Anyone know how to do this?

Maybe this link can help you
http://www.exnovodesign.com/830.html

Scroll down to Master Class no 2

Thanks Renata. I am just off for 2 weeks quilting at Quilting By the Lake (QBL) in Syracuse NY. I am taking my 450 with me but will ask the great tech my next best steps. If I need to I will take it into the shop when I return home. Next time I will be less enthusiastic. I will also let you know what advice I am given & if it works.

bunny9 wrote:
Not sure what you mean, Barbara, but I would have to assume you are referring to the oval-shaped spring that you push your bobbin against when you insert the bobbin. If that is the case, I can't help you because mine popped out completely and I had to ask the technician to reinsert it. However, in the Bernina Corner of the Forum there was a discussion under the rubric of Flat spring behind bobbin 820QE. This might help you solve your problem. If that's not what you're talking about, please help me better understand what you're referring to.

Glad to know you were able to remove the garbled thread from your bobbin area. Amazing what a difference a little excess thread can make...

Renata
I finally got the peace & quiet to work on the machine & success!!! Thank you so much, the little tool worked beautifully using your instruction ( your picture was fabulous). There was a little ball of thread that was causing all my problems.

However, I think I was a little too enthusiastic & the bobbin popped out a bit too far. Any ideas how to seed it properly again? :

Thanks a lot, Renata. I haven't had many problems either. The way you describe is the one I use. Hooray, not a new habit to learn here
I just love my machine. I really feel I can do all that I want with this one.

You're most welcome, Norma1 Let me know if you have any questions regarding its use. I've used it often enough to be comfortable with it but have not needed it in a long time... knock on wood! When sewing or doing FMQ, if I make sure to bring the thread up from the bobbin and hold it while I make the first few stitches, I never get garbled thread in the hook. I have also learned that, when you bring up the bobbin thread, always use the side of the foot pedal where you press down with the heel to bring the needle down and then up again, not where you press the foot pedal with your toes to make the machine run. This feature of the 8 series machine ensure synchronization between top and bottom threads so that you do not get garble.

Renata, that's a very good explanation on how to use the tool. I don't have the instruction booklet on it because I bought my machine second hand and didn't know I was missing it, so THANK YOU!

Looks like a dandy little tool ! I will ask for it next visit to the dealer ! Happy 4th all !!

Barbara,
I went searching for a video but had no luck. I do have the instruction booklet that came with my kit though. If you have that and you follow the English language instructions and go to the back flap of the booklet for photos. it is pretty self-explanatory. If you don't have the booklet, here it is:



Hook Cleaning Tool

IMPORTANT:
This tool may only be used for the application described!
Cut threads close to the stitch plate and remove the sewing project

Preparation:
- Remove presser foot, needle and stitch plate
- Open the bobbin door, the hook will swing out.
- Switch sewing computer off.

Procedure:
First use tweezers from the standard accessories to carefully remove the visible threads from the entire hook area (Fig. 10).

Turn handwheel to bring hook into the position shown in the picture (Fig. 11).

Carefully insert the tool into the opening, then pull the threads up and out by moving the tool sideways and upways (Fig. 12).

After removing all thread bits, lubricate the sewing computer, then switch it on and close the bobbin door.

THAT'S IT FOR THE BERNINA INSTRUCTIONS!

A few comments from me:

If picture 12 is not clear, when you turn the handwheel, the hook has to be leaning forward enough that you can see where to insert the tool. Notice on Fig. 12 where the two metal pieces cross: your tool must be inserted to the right of that. You will go down straight with your tool and it should go down smoothly. If not, you know you're not in the correct place.

Here is a photo of my machine, with the hook leaning forward (I turned the handwheel to get there) and the tool inserted.

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Once the tool in inserted, you gently swing the tool to the left and to the right to see if it "hooks" a piece of thread stuck down there and then gently pull up to get the thread out.

If nothing comes up, then the thread is stuck somewhere else OR that might not be the problem.

Hope this helps! Wish there were a video! Let me know how it goes.

Thanks Renata, I do have the tool to which you are referring. I am desperately looking for a video to see how to use it properly as I know it should do the trick on that little piece of thread which is teasing me.