Viking 6460--sewing normally all day, suddenly stopped stitching--motor whirs normally when I step on pedal. Machine stitches normally when I turn wheel manually. Is this brushes?

To slow down the stitching speed on your Husqvarna Viking 18 x8, you can try the following steps:

1. Check the machine's manual: First, consult the manual that came with your Husqvarna Viking 18 x8 machine. The manual should have instructions on how to adjust the stitching speed.
2. Adjust the stitch length: One way to slow down the stitching speed is to adjust the stitch length. A shorter stitch length will slow down the machine's stitching speed. Refer to your machine's manual for instructions on how to adjust the stitch length.
3. Change the foot pressure: Another way to slow down the stitching speed is to change the foot pressure. Reducing the foot pressure can help slow down the machine's stitching speed. Again, refer to your machine's manual for instructions on how to adjust the foot pressure.
4. Use a different presser foot: Some presser feet are designed for slower stitching speeds. You can try using a different presser foot to slow down the machine's stitching speed.
5. Use a speed control pedal: Some machines come with a speed control pedal that allows you to adjust the machine's stitching speed. If your machine has a speed control pedal, try using it to slow down the stitching speed.

If none of these steps help slow down the stitching speed on your Husqvarna Viking 18 x8, you may need to contact a professional technician for assistance.

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Viking 6460 Sewing Machine Parts

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Try some of the simple things first. Remove the bobbin plate using a screwdriver and then remove the bobbin. Clean out any lint that may be under the bobbin and which may cause your zigzag stitch not to work. Replace the bobbin and the bobbin plate and test your zigzag stitch.
https://www.hunker.com/13407517/the-zigzag-stitch-wont-work-on-my-sewing-machine

It sounds like the computer has lost the program. What model do you have?

The foot pedal has nothing to do with this. You machine is telling you that you have the wrong presser foot on the machine for what you are trying to do.


Do you have your manual? Mine tells me what foot goes with which stitch.

then a sewing machine shop would have to order the part & put it on
then have them service the whole machine

it needs to be serviced

As to your question about leather, the 6460 has a special stitch for sewing leather. Select Colormatic cam C and install in the cam hole at the back of the machine. To remove/add a cam turn the upper left hand dial on the front of the machine to the small dot. This disengages the cam. Gently remove the cam by pulling straight out from the back of the machine. Install cam C straight in, ever so slightly twisting it back and forth into the hole to find the sweet spot. You'll hear a click when it's all the way in.

To use Viking's leather stitch, turn the upper left dial to the color yellow. (Note: The slash line on the upper left dial is a stop. You can't turn past that point. Go in the other direction to get to the icon or color you want.) Turn the upper right and bottom right dial to yellow also. The upper left dial is what selects the particular stitch on the cam, the leather stitch in this case. The upper right dial selects stitch length, and the lower right dial selects stitch width. You can move the right dials within the color range. Experiment on a scrap of cloth to get the stitch size the way you want it. The leather stitch looks like a straight stitch with a block style edging to the right of the straight stitch. This is supposed to give a stronger stitch to the leather rather than a straight stitch by itself.
If you don't have the manual for your machine: Select which of the eight cams you want to use. All the cams are removed/installed by turning the upper left dial on machine front to the small dot. At the rear of the machine, pull/insert cam straight in or out and twist slightly as you push in or remove to find the sweet spot. Move the dial away from the small dot to lock the cam in.
Turn upper left dial to stitch type you want and match the other dials to that same color. Upper right controls stitch length, lower right controls width. Bobbin tension is controlled by the dial at front left of the machine, above the needle.
Cams A-C are the workhorse cams and the rest are embroidery stitches.Straight stitch, button and stitched zig-zag will work on any cam. These stitches do not rely on matching a color code. To use those three: To select straight stitch, on the upper left dial, choose the icon that looks like a buttonhole with a zig that trails off to the right. Select stitch length on upper right dial and turn the lower right dial to zero, going by number rather than color.
To select stitched zig zag, turn upper left dial to the broken zig zag icon (to the right of the straight stitch icon). Select stitch length and width.
To move the needle to the side for buttonhole stitching or other times when you want the needle off center, turn the upper left dial to the button icon. If stitching a button hole, set stitch length to zero and lower right dial to desired stitch width. Push in the small white button that's beneath the lower right dial in order to prevent the feed dogs from moving the fabric forward. Pushing that button in is also handy for putting cloth under the foot before sewing as it prevents snagging and is used for tacking.

When you turn on a #1 Husqvarna Viking the machine defaults all the electronic settings to do a straight stitch at a 2.5mm stitch length, that equates to approximately 10 stitches per inch. The top tension dial sets itself automatically and the only other dial is on the left side of the machine. That dial sets the pressure on the foot that holds down the fabric. It's normal setting is 6.

sounds like the motor belt came off the machine, your description makes that sound exactly like what the problem is.