Why Zig Zag Stitch Coming Out Straight? (Solution)

Last Updated on December 26, 2023

Welcome back to another quick fix guide on why is my zig zag stitch straight and skipping stitches! If you’ve ever found yourself frustrated with a zig-zag stitch that just won’t cooperate, you’re not alone.  Today, we’ll get into an issue that many sewing machine owners face – a zig-zag stitch that’s straight and skipping stitches.

Join us as we share our journey in fixing the timing on a Singer 615C sewing machine, specifically addressing the issue of skipped stitches in the zig-zag pattern.

Zig Zag Stitch Coming Out Straight


  • If your zig-zag stitch is straight and skipping stitches, it could be a timing problem. Check for issues when transitioning from straight to zig-zag stitches.
  • Open the bobbin and back covers to access the machine’s inner workings. This step is crucial for diagnosing and fixing timing problems.
  • Flip the machine to its underside, unseat the belt, and gently advance the needle toward the hook. Ensure the timing is correct by aligning the hook and needle loop.
  • Confirm that the timing is fixed before reassembling the machine. Place the bobbin case back in its position and lock it securely.
  • Once the timing is corrected, rejoice in a smoothly functioning zig-zag stitch.

Additional Resources – Straight Stitch vs. Zig Zag – (Main Difference)

Straight Zig Zag Stitch Problem

In a Singer 615C sewing machine, the straight stitch seemed fine, but when we switched to the widest zigzag stitch, it skipped most of the zigs and zags and stitched straight. The problem was identified – the needle hook was out of sync, causing timing issues. This can lead to a host of problems when attempting zigzag stitching.

Why is My Zig Zag Stitch Coming Out Straight and Skipping Stitches?

If your zigzag stitch is coming out straight and skipping stitches, it likely indicates a timing issue in your sewing machine. In our case with the Singer 615C, the needle hook was out of sync, causing timing problems during zigzag stitching.

How to fix zig zag stitch coming out straight

To fix a zig-zag stitch coming out straight, adjust the sewing machine’s timing by accessing the underside, unseating the belt, and carefully aligning the needle and hook for proper synchronization. Reassemble the machine, and your zig-zag stitch should be back on track.

Follow our simple step by step guide to fix this issue and get your machine back in action.

Step 1: Removing the Bobbin

Removing the Bobbin
Removing the Bobbin

To start the fixing process, open up the bobbin cover and back cover plate and remove the bobbin and bobbin casing. This will give you access to the machine’s inner workings, crucial for identifying and resolving the timing issue.

Step 2: Fixing the Needle Timing

Fixing the Needle Timing
Fixing the Needle Timing
  1. Accessing the Underside: Flip the machine over to access the underside. Locate the screw that provides access, and unscrew it to proceed.
  2. Unseating the Belt: Gently unseat the belt and advance the needle towards the hook. Be cautious and hold onto the gear to prevent any sudden movements.
  3. Adjusting the Timing: Move the belt off and gently advance the needle towards the hook. Realign the belt and check the timing.
  4. Checking the Timing: Proper timing is crucial. The hook should meet the needle loop just below where it touches as the needle starts to come up. If the timing is correct, the hook should pass by just after the needle starts its upward movement.
  5. Reassembling: Once the timing is corrected, reassemble the sewing machine by placing the bobbin case back in and locking it in place.

FAQs on Troubleshooting Zig-Zag Stitch Skipping

Can I fix timing issues on my sewing machine without professional help?

While we aren’t sewing machine mechanics, our guide shows a simple method to fix the timing issues of the sewing machine. Follow the steps carefully, and you can resolve the problem yourself.

How often should I check the timing on my sewing machine?

It’s not necessary to check the timing regularly unless you notice issues like skipped stitches or uneven stitching. If your sewing machine is working fine, there’s usually no need to intervene.

Will fixing the timing affect other stitches on my sewing machine?

Fixing the timing is specific to resolving issues with zig-zag stitches. It shouldn’t impact the functionality of other stitches, provided the machine is reassembled correctly.

 Is it normal for vintage sewing machines to have timing issues?

Over time, vintage machines might experience timing issues due to wear and tear. However, with proper maintenance and occasional checks, you can keep them running smoothly.

What if the timing issue persists even after following the steps?

If the problem persists, it’s advisable to consult a professional sewing machine mechanic. They can assess and address any underlying issues requiring specialized knowledge and tools.

Does fixing the timing require any special tools?

The method we demonstrated uses basic tools like a screwdriver and gentle handling. However, professional sewing machine mechanics may use specialized tools to ensure precise adjustments for more complex issues.


In conclusion, fixing the timing on your sewing machine can be a manageable task, even if you’re not a sewing machine expert.

Carefully following the steps outlined in this guide, you can address the issue of zig-zag stitch skipping and get your machine back in working order.

Remember to take it one step at a time, be patient, and enjoy the satisfaction of a well-timed sewing machine.

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