The length & width knob on my New Home model DX 2022 is frozen How can I free it

A transcript from the Elna SU manual reads as follows, and the manual can be viewed on line at http://sewingonline.co.uk/instructions/elnasp/

First make a few trial runs with a scrap of material exactly as the buttonhole will be stitched, with the machine adjusted as you intend to use it.
1. Use the embroidery and buttonhole foot. It can be chnged without a screwdriver by using the fixation screw.- With the stitch width knob at "0", turn the selector to zigzag "1".
2. De-center the needle to the left.
3. Set the stitch width knob at 2, with the solid mark on top.
4. Set the stitch length dial between 1/2 and 1/4.
5. a) Mark the desired length on the material.
b) Sew the first side of the buttonhole. Stop with the needle in the material and the mark (right).
c) Raise the foot and pivot the material round the needle. Lower the foot and raise the needle.
6. a) Set the stitch width knob at 4.
b) Sew a few stitches. Raise the needle.
7. a) Set the stitch width knob at 2.
b) Sew the second side and stop just short of the length of the first. Raise the needle.
8. a) Set the stitch width knob at 4.
b) Finish off the buttonhole by sewing a few stitches. Raise the needle.
9. a) Set the stitch width knob at "0".
b) Sew a few stitches to fasten the threads, holding the material back by hand.
10. Open with the buttonhole knife, which you will find in the accessory box.

Tension knob on any machine will be in the thread path and usually above the needle somewhere, while the stitch width and length knobs are usually on the right side of the machine. I cant identify your model but on any machine straight stitch is usually a length of 2.5 and width of 0, while a zigzag the width will be set somewhere between 2-4 depending on how wide you need it to be. There is usually a stitch selector of some sort too but many machines, providing the width is set to 0, you will get a straight stitch.

you probably can't adjust the pressure on the foot, most models it is preset with no ability to adjust the pressure. Take a look at the top of the machine, left side above the needle area. If your machine has adjustable foot pressure, there will be a thumb screw of some sort on the top of the machine in this area, possible with a + and - symbol to indicate which way to turn to adjust the pressure.

I have owned Elnas, Janomes and Singers and only one of them had adjusted foot pressure.

it's possible that the machine needs to be checked at a sewing machine shop for the timing

Hello

The stitch dial for the length is located all the way on the right side of the machine and is factory set at the setting "3," which is a 3mm or 1/8 inch length. Turn the dial up or down to adjust the length. For example, the setting "4" is 4mm (5/32 inch) and "2" is 2mm (5/64 inch).

The width of the serged seam is dependent on the needle or by adjusting the knob for the width. With the left needle only sewing, the width is set to 7/32 inch, and with the right needle only sewing, it is set to 9/64 inches. Additionally, by pushing in the width adjustment knob behind the front cover, the stitching can be adjusted manually from 1/8 inch to 17/64 inch wide.

I have the same model, have you turned the first knob on left, the stitch selector, to the stitch you want? Then turn the middle knob, the stitch width to "4". Use the colour guide marks shown in the little picture on left of the knobs so you are dialing up the right settings. So for the zig zag, elastic blind hem, scallop, overcasting and multi-stretch stiches, 1-6 on the diagram you'll be setting the left knob to 1, 2, 3, 4, 5 and 6 respectively and the stitch width and length knobs to "green", you can vary the length and width to suit what you want.

Then for the cams, you need to set everything zero, turn stitch selector to 7, the cam setting. then turn the width to orange again (3-4) and the stitch lenth selector to the orange setting, right around the knob. This engages the "Elnagraph" the device under the flap on top of the machine to read the discs. Basically the green stitches the needle is swinging from side to side while the feed dogs move the fabric forward, making your zig zags, blind hems etc.
But when you engage the Elna graph, the machine matches stiches by moving the fabric "forward and backwards at certain times, while the needle does its thing from side to side. This is what makes elastic or stretchy type stitches because you are putting "stretch" into the seam by sewing forwards and backwards.

Please note: always turn your stitch width and length back to Zero BEFORE you make any changes to the left knob and select a new stitch as this saves on wear and tear to the moving parts in these wonderful machines.

I do hope this assists you and I haven't just told you stuff you already knew!

I have the same model, have you turned the first knob on left, the stitch selector, to the stitch you want? Then turn the middle knob, the stitch width to "4". Use the colour guide marks shown in the little picture on left of the knobs so you are dialing up the right settings. So for the zig zag, elastic blind hem, scallop, overcasting and multi-stretch stiches, 1-6 on the diagram you'll be setting the left knob to 1, 2, 3, 4, 5 and 6 respectively and the stitch width and length knobs to "green", you can vary the length and width to suit what you want.

Then for the cams, you need to set everything zero, turn stitch selector to 7, the cam setting. then turn the width to orange again (3-4) and the stitch lenth selector to the orange setting, right around the knob. This engages the "Elnagraph" the device under the flap on top of the machine to read the discs. Basically the green stitches the needle is swinging from side to side while the feed dogs move the fabric forward, making your zig zags, blind hems etc.
But when you engage the Elna graph, the machine matches stiches by moving the fabric "forward and backwards at certain times, while the needle does its thing from side to side. This is what makes elastic or stretchy type stitches because you are putting "stretch" into the seam by sewing forwards and backwards.

Please note: always turn your stitch width and length back to Zero BEFORE you make any changes to the left knob and select a new stitch as this saves on wear and tear to the moving parts in these wonderful machines.

I do hope this assists you and I haven't just told you stuff you already knew!

look at the cam gear. This is the unit that the cam connects to. It could have a crack or be split completely. If there is a crack the cam stack will have to be replaced. The parts are hard to get and a good technician is needed.

It does not matter what pattern you select, if you have the stitch width dial on 0 or set on straight stitch then that is all it will do, to do patterns you need a close stitch length about 2 or if it is not numbered get the stitches close to suit yourself and the stitch width on the widest number.

There are two types of discs - single and double.
For the thinner single discs do as follows:
1.Turn stitch width knob to "0"
2. Turn stitch length knob to "0"
3. Insert the single disc
4. Turn the top selector to "A"
5. Make sure the needle selector is in the centered position.
6. You may now choose any stitch length or width you wish. I usually try "3" for the width and 1/2 for the length to start.

For the thicker double discs do as follows:

1.Turn stitch width knob to "0"
2. Turn stitch length knob to "0"
3. Insert the double disc
4. Turn the top selector to "A"
5. Make sure the needle selector is in the centered position.
6. You may now choose any stitch width.
7. The stitch length must be put on "A" - this is the difference between the single and double discs!
I hope this helps!