Zigzag not working - Sewing Machines

If your Bernina 930 record sewing machine is experiencing issues with zigzag stitches and straight stitches, here are some troubleshooting steps you can try:

1. Check the needle: Ensure that the needle is properly inserted and not bent or dull. Replace the needle if necessary, making sure to use the correct needle type and size for the fabric you are sewing.
2. Adjust the stitch width and length: Verify that the stitch width and length settings are properly adjusted for the desired zigzag stitch. Refer to your machine's user manual for instructions on how to adjust these settings correctly.
3. Clean and lubricate the machine: A build-up of lint or lack of lubrication can affect the machine's performance. Clean the bobbin area and other accessible parts of the machine using a soft brush or lint brush. Apply a drop of sewing machine oil to the recommended areas as specified in the user manual.
4. Check the tension: Improper tension can lead to skipped stitches. Ensure that the upper thread tension is properly adjusted for the fabric and thread you are using. Consult the user manual for guidance on adjusting the tension correctly.
5. Test with different fabrics and threads: Try sewing on different fabrics using different types of thread to determine if the issue is specific to certain materials. This will help identify whether the problem lies with the machine or the materials being used.
6. Have the machine serviced: If the above steps do not resolve the issue, it may be necessary to have your Bernina 930 record serviced by a professional. There could be underlying mechanical issues that require expert attention.

It's important to note that the Bernina 930 record is a vintage sewing machine, and finding a qualified technician with experience working on older models may be beneficial if further repairs or adjustments are needed.

turn the ZigZag width dial (23) to Zero

https://www.etsy.com/listing/764828308/samb-2-nalco-necci-dressmaker-penncrest

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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

Take it in for service.

There is an arm in the head that does the zig zag movement and attaches to the needle bar with a pin. If that isn't connected zig zag won't work at all.

it sounds like the machine needs to be checked at a sewing
machine shop to see what's wrong with the cam's or gear
that makes the stitches

Download the users manual here if you don't have one. PFAFF users manual.

It must be a design flaw- things don't always last like they are supposed to. I would personally check the physical reason it is not responding... knowing what it would take to make it stop moving- or whatis causing it to. *perhaps the switch isn't working to stop it- or the mechanism that controls it is worn down. If it was new- I'd return it- but there are only a few options at this point.

The guy is right, dust kills the moving parts. try oiling the shaft that holds the needle up about 1/2 way and then run on straight stitch with no thread to work in oil, do this several times till you feel that it runs smoothly and you have a little movement side to side as this is necessary for your zig-zag. if that does not work it may be a cam or belt in the top part that needs replacing and you will need the repair to tell you that. I asked them to give me a quote before any work was done so I knew what I was up against. I love my machine so it was worth the 200.00 to get the parts replaced. It will sew anything cause it is a older model with metal rather than plastic parts. hope this helps good luck