Janome Sewist 721 Common Problems and Troubleshooting

If you are in need of a great quality mechanical sewing machine, then the Janome Sewist 721 Sewing Machine is the right machine for you. The Janome Sewist 721 Sewing Machine features 19 popular stitches, top drop-in bobbin, and 4-step buttonhole.

It also includes some very nice features that are normally found on more expensive machines. In this article, we will address possible problems and solutions specific to the Janome Sewist 721 Sewing Machine.

Janome Sewist 721 Overview

Briefly, the Janome Sewist 721 Sewing Machine is a mechanical sewing machine that offers a variety of features to enhance your sewing experience. Here are some product details and features:

Feature	Description
Sewing Speed	Up to 830 stitches per minute
Machine Screen	No screen, has stitch selector dial
Built-in Stitches	19
Stitch Width	5mm
Buttonholes	4 Step
Needle Positions	Pre-set per stitch, but has a width adjustment dial
Foot Pressure	Yes
Needle Threader	Yes
Lighting	LED Light

Features of the Janome Sewist 721 Sewing Machine

Free Arm Design
Embroidered Measures: Tape measure on the front of the accessory box
Quick Reference Stitch Chart: Yes, on the machine front

Stitch Length: Up to 4mm
Speed Control Slide: No
Bobbin Winder: Yes

Causes of Common Problems with the Janome Sewist 721

In the following subsections, we will address possible problems and their solutions with the Janome Sewist 721 Sewing Machine.

Common Problems with the Janome Sewist 721 and Troubleshooting

1. Uneven or Skipped Stitches

Description of the Problem: When using the Janome Sewist 721, you may notice that the stitches appear uneven or some stitches are being skipped, resulting in an imperfect sewing outcome.
Cause of the Problem: Uneven or skipped stitches can be caused by various factors, such as incorrect needle insertion, improper threading, or a damaged needle.

Troubleshooting Step-by-Step:
1. First, turn off the sewing machine and unplug it for safety.
2. Check if the needle is correctly inserted and not bent or damaged. Replace the needle if necessary.
3. Rethread the machine following the threading instructions in the user manual, making sure the thread is properly seated in the tension disks and take-up lever.
4. Test the machine on a scrap fabric to see if the issue persists. If it does, try adjusting the tension settings slightly until the stitches appear balanced.

2. Bobbin Thread Tangles or Breaking

Description of the Problem: The bobbin thread on the Janome Sewist 721 keeps tangling, causing thread jams, or it frequently breaks during sewing.

Cause of the Problem: Bobbin thread issues are often linked to improper bobbin winding, using low-quality thread, or incorrect bobbin tension.
Troubleshooting Step-by-Step:
1. Remove the bobbin and check if it was wound evenly and correctly. Rewind the bobbin if needed.
2. Use good-quality thread specifically recommended for sewing machines.
3. Adjust the bobbin tension slightly. Refer to the user manual for instructions on how to adjust the bobbin tension on the Janome Sewist 721.
4. Clean the bobbin area and ensure there are no loose threads or lint causing the tangling issue.

3. Needle Breakage

Description of the Problem: The needle on the Janome Sewist 721 frequently breaks while sewing, which can lead to frustration and interrupted projects.
Cause of the Problem: Needle breakage can occur due to using the wrong needle size for the fabric thickness, hitting pins, or a misaligned needle.
Troubleshooting Step-by-Step:
1. Ensure you are using the correct needle size and type suitable for the fabric you are sewing. Thick fabrics may require larger needles.
2. Check the needle plate and bobbin area for any bent pins or foreign objects that may be causing the needle to hit them.
3. Insert the needle properly, making sure it is not skewed or misaligned. If in doubt, refer to the user manual for the correct needle insertion process.
4. Lower the needle slightly and test the machine on a scrap fabric to see if the needle still breaks. If it does, consider consulting a sewing machine technician for further inspection.

4. Thread Tension Issues

Description of the Problem: You may experience thread tension problems on the Janome Sewist 721, where the upper and lower threads do not properly interlock, leading to loose or puckered stitches.
Cause of the Problem: Incorrect thread tension settings, incorrect threading, or lint buildup in the tension discs can cause tension issues.

Troubleshooting Step-by-Step:
1. Check the upper thread tension settings and ensure they are adjusted correctly for the fabric you are using. If needed, adjust the tension dial accordingly.
2. Rethread the machine following the threading path specified in the user manual, ensuring the thread passes through all necessary guides and tension discs.
3. Remove the lint buildup from the tension discs and other areas around the thread path using a brush or a soft cloth.
4. Test the machine on a scrap fabric after making adjustments to see if the tension issue is resolved. Fine-tune the tension as necessary.

5. Sewing Machine Jamming

Description of the Problem: The Janome Sewist 721 experiences frequent jamming, where the fabric gets stuck, and the machine stops functioning properly.

Cause of the Problem: Jamming can occur due to using thick fabrics that the machine cannot handle, incorrect needle size, or issues with the feed dogs.
Troubleshooting Step-by-Step:
1. Stop sewing immediately if you notice jamming to avoid damaging the machine or fabric further.
2. Carefully remove the fabric and check the feed dogs for any obstructions or debris that may be hindering their movement.
3. Ensure you are using the appropriate needle size and type for the fabric being used.
4. If sewing thick fabrics, consider using a walking foot attachment to help feed the layers evenly.

6. Thread Bunching Under Fabric

Description of the Problem: You notice that the thread is bunching up under the fabric, creating messy stitches and uneven sewing results.
Cause of the Problem: Thread bunching can occur due to incorrect threading of the upper thread, incorrect bobbin insertion, or lint buildup in the bobbin area.
Troubleshooting Step-by-Step:
1. Rethread the machine carefully, making sure the upper thread is properly threaded through all necessary guides and tension discs.
2. Check the bobbin to ensure it is inserted correctly and unwinds in the correct direction.
3. Clean the bobbin area and remove any lint or stray threads that might be causing the issue.
4. Test the machine on a scrap fabric after rethreading and cleaning to see if the problem is resolved.

7. Fabric Not Feeding Smoothly

Description of the Problem: The fabric does not feed smoothly through the Janome Sewist 721, causing uneven stitching and difficulty in guiding the fabric.
Cause of the Problem: Uneven fabric feeding can be caused by issues with the feed dogs, improper presser foot pressure, or using the wrong presser foot for the fabric type.

Troubleshooting Step-by-Step:
1. Check the feed dogs to ensure they are raised and moving freely while sewing. If not, consult the user manual for instructions on how to adjust the feed dog position.
2. Adjust the presser foot pressure according to the fabric being used. Lighter fabrics may require less pressure, while thicker fabrics may need more pressure.
3. Ensure you are using the appropriate presser foot for the specific sewing task and fabric type.
4. If the issue persists, consider cleaning the feed dog area and removing any debris that might be hindering their movement.

8. Sewing Machine Making Unusual Noises

Description of the Problem: The Janome Sewist 721 is making strange noises during operation, such as grinding, rattling, or squeaking sounds.

Cause of the Problem: Unusual noises can be caused by loose parts, foreign objects inside the machine, or a need for lubrication.
Troubleshooting Step-by-Step:
1. Stop using the machine immediately if you hear unusual noises to prevent further damage.
2. Check for any loose screws or parts on the machine and tighten them if necessary.
3. Inspect the bobbin area and internal parts for any foreign objects that may be causing the noises. Remove any debris found.
4. If the machine requires lubrication, follow the instructions in the user manual for proper lubrication points and use a recommended sewing machine oil.

9. Stitch Selector Dial Not Working

Description of the Problem: The stitch selector dial on the Janome Sewist 721 is not functioning correctly, and you are unable to switch between different stitches.
Cause of the Problem: The stitch selector dial may get stuck or misaligned due to dust or mechanical issues.
Troubleshooting Step-by-Step:
1. Gently turn the stitch selector dial to see if it becomes unstuck. Avoid applying excessive force to prevent further damage.
2. Clean the area around the stitch selector dial to remove any dust or debris that may be hindering its movement.
3. If the dial remains unresponsive, consult the user manual for guidance on how to troubleshoot the stitch selector mechanism or consider seeking professional repair.

10. Uneven Feed Dog Movement

Description of the Problem: The feed dogs on the Janome Sewist 721 are not moving uniformly, leading to irregular fabric feeding and stitching.
Cause of the Problem: Uneven feed dog movement can be caused by misalignment, dirt accumulation, or worn-out feed dogs.
Troubleshooting Step-by-Step:
1. Check the feed dog mechanism for any misalignment or damage. If found, consult the user manual or a sewing machine technician for adjustments or repairs.
2. Clean the feed dogs and surrounding area to remove any dirt or lint that might be affecting their movement.
3. If the feed dogs appear worn-out, consider replacing them with compatible new feed dogs as per the manufacturer’s recommendations.

11. Thread Keeps Breaking

Description of the Problem: The thread on the Janome Sewist 721 keeps breaking while sewing, causing interruptions and frustration.
Cause of the Problem: Thread breakage can be caused by various factors, including incorrect threading, using low-quality thread, or tension issues.
Troubleshooting Step-by-Step:
1. Check the upper thread path and ensure it is correctly threaded through all guides and tension discs.
2. Use high-quality thread that is suitable for sewing machines.
3. Adjust the upper thread tension slightly to see if it reduces the breakage. Refer to the user manual for guidance on adjusting the tension.
4. Check the needle size and type, making sure it is appropriate for the fabric being used. A needle that is too small or dull can cause thread breakage.

12. Bobbin Thread Not Catching

Description of the Problem: The Janome Sewist 721 is not picking up the bobbin thread properly, leading to incomplete stitches.
Cause of the Problem: The bobbin may not be inserted correctly, or the bobbin thread may not be threaded through the machine properly.

Troubleshooting Step-by-Step:
1. Remove the bobbin and reinsert it into the bobbin case, making sure it fits securely and unwinds in the correct direction.
2. Rethread the bobbin thread through the tension spring and guides as specified in the user manual.
3. Hold the upper thread tail while manually turning the handwheel to lower the needle and pick up the bobbin thread.
4. Once the bobbin thread is caught, pull both the upper and bobbin threads towards the back of the machine before starting to sew.

13. Needle Threader Malfunction

Description of the Problem: The needle threader on the Janome Sewist 721 is not working as expected, making it difficult to thread the needle.

Cause of the Problem: The needle threader mechanism may be misaligned, bent, or damaged.
Troubleshooting Step-by-Step:
1. Inspect the needle threader for any visible misalignment or damage. If found, avoid using it further to prevent exacerbating the issue.
2. Attempt to thread the needle manually using a hand-held needle threader or by following the traditional threading method.
3. If threading manually is challenging, replace the needle with a new one and try using the needle threader again.
4. If the needle threader remains unresponsive, consult the user manual for further guidance or seek professional assistance for repair or replacement.

14. Uneven Buttonholes

Description of the Problem: The buttonholes created by the Janome Sewist 721 are uneven in size or have irregular stitching.
Cause of the Problem: Uneven buttonholes can result from incorrect buttonhole foot attachment, incorrect settings, or fabric slippage during sewing.
Troubleshooting Step-by-Step:
1. Ensure you are using the appropriate buttonhole foot for the Janome Sewist 721 and that it is securely attached.
2. Review the user manual for the correct buttonhole settings and adjust them accordingly for the desired buttonhole size and style.
3. Stabilize the fabric using interfacing or stabilizer to prevent slippage during buttonhole stitching.
4. Practice creating buttonholes on a scrap fabric before sewing on the actual project to ensure the desired results.

15. Machine Jamming with Thick Fabrics

Description of the Problem: The Janome Sewist 721 frequently jams when sewing thick or multiple layers of fabric.
Cause of the Problem: The machine may struggle to feed thick fabrics evenly, leading to jamming and needle deflection.

Troubleshooting Step-by-Step:
1. Use the appropriate needle size and type for sewing thick fabrics, such as denim or canvas.
2. Consider using a walking foot attachment to assist with the even feeding of thick fabrics.
3. Reduce the sewing speed when working with thick materials to avoid straining the machine.
4. Ensure the machine is clean and well-maintained to avoid any additional friction or resistance while sewing thick fabrics.

16. Thread Keeps Tangling in the Bobbin Area

Description of the Problem: The thread frequently gets tangled in the bobbin area of the Janome Sewist 721, leading to sewing difficulties and messy stitches.

Cause of the Problem: Tangling of the thread in the bobbin area can be caused by improper bobbin winding, using low-quality thread, or incorrect bobbin insertion.
Troubleshooting Step-by-Step:
1. Check the bobbin winding process to ensure the thread is wound evenly and smoothly onto the bobbin.
2. Use good-quality thread specifically designed for sewing machines to reduce tangling issues.
3. Reinsert the bobbin into the bobbin case, ensuring it unwinds in the correct direction and fits securely.
4. If the problem persists, consider adjusting the bobbin tension slightly. Refer to the user manual for guidance on adjusting the bobbin tension.

17. Fabric Puckering during Sewing

Description of the Problem: The fabric tends to pucker or gather while sewing with the Janome Sewist 721, resulting in an undesirable finish.
Cause of the Problem: Fabric puckering can occur due to excessive tension, using the wrong needle size, or sewing too quickly.
Troubleshooting Step-by-Step:
1. Check the upper and bobbin thread tension to ensure they are balanced and not too tight.
2. Use the appropriate needle size and type for the fabric being sewn. Finer fabrics may require smaller needles.
3. Slow down the sewing speed to allow the machine to feed the fabric evenly and reduce the chances of puckering.
4. Consider using a stabilizer or interfacing on delicate fabrics to prevent puckering during stitching.

18. Bobbin Thread Not Sewing

Description of the Problem: The Janome Sewist 721 is sewing with the upper thread, but the bobbin thread is not forming stitches on the fabric.
Cause of the Problem: This issue can occur due to improper bobbin insertion, incorrect threading, or issues with the bobbin case.

Troubleshooting Step-by-Step:
1. Ensure the bobbin is inserted correctly into the bobbin case, unwinds in the correct direction, and fits securely.
2. Rethread the bobbin thread through the tension spring and guides, making sure it is correctly seated in the bobbin case.
3. Check the bobbin case for any damage or debris that may be affecting the bobbin thread’s ability to form stitches.
4. Manually turn the handwheel to lower the needle and pick up the bobbin thread before starting to sew.

19. Needle Thread Keeps Skipping Stitches

Description of the Problem: While sewing with the Janome Sewist 721, the needle thread occasionally skips stitches, resulting in incomplete lines of stitching.

Cause of the Problem: Skipping stitches can be caused by a blunt or bent needle, incorrect thread tension, or using the wrong needle for the fabric type.
Troubleshooting Step-by-Step:
1. Replace the needle with a new one to ensure it is sharp and not bent.
2. Check the thread tension settings and adjust them as needed for balanced stitching.
3. Verify that you are using the correct needle size and type suitable for the fabric you are sewing.
4. If the problem persists, try slightly adjusting the needle position or stitch width to see if it improves the stitch formation.

20. Sewing Machine Not Powering On

Description of the Problem: The Janome Sewist 721 is not powering on despite being connected to a power source.
Cause of the Problem: The power cord may be loose, the power outlet might not be functional, or there could be an issue with the machine’s internal wiring.
Troubleshooting Step-by-Step:
1. Ensure that the power cord is securely plugged into both the machine and the power outlet.
2. Try using a different power outlet to confirm whether the issue is with the outlet or the sewing machine.
3. Check if there is a power switch or button on the machine and make sure it is turned on.
4. If the machine still does not power on, consider seeking professional assistance for internal wiring inspection and repair.

21. Needle Hits the Presser Foot

Description of the Problem: The needle of the Janome Sewist 721 hits or rubs against the presser foot during sewing, causing damage to both the needle and the foot.
Cause of the Problem: The needle may be misaligned, or the presser foot may not be installed correctly.

Troubleshooting Step-by-Step:
1. Stop using the machine immediately if you notice the needle hitting the presser foot to prevent further damage.
2. Check the needle to ensure it is correctly inserted and not bent or damaged. Replace the needle if necessary.
3. Inspect the presser foot for proper installation and alignment. Reattach the foot if it is loose or misaligned.
4. Lower the needle manually and observe if it hits the presser foot. If the problem persists, consult the user manual or seek professional assistance.

22. Thread Keeps Looping on the Fabric

Description of the Problem: The thread forms loops on the fabric’s underside instead of forming stitches, resulting in tangled threads and poor stitching.

Cause of the Problem: This issue can occur due to incorrect threading of the machine, improper bobbin winding, or tension imbalances.
Troubleshooting Step-by-Step:
1. Rethread the machine carefully, ensuring the thread passes through all necessary guides and tension discs.
2. Check the bobbin winding to ensure the thread is wound evenly and smoothly onto the bobbin.
3. Balance the upper and bobbin thread tension by adjusting the tension settings slightly.
4. Test the machine on a scrap fabric after rethreading and adjusting the tension to see if the looping issue is resolved.

23. Uneven Feed Dog Height

Description of the Problem: The feed dogs on the Janome Sewist 721 are not at the same height, causing uneven fabric feeding and stitching.
Cause of the Problem: Uneven feed dog height can be caused by wear and tear, misalignment, or damage to the feed dog mechanism.
Troubleshooting Step-by-Step:
1. Inspect the feed dogs for any visible misalignment or damage. If found, consult the user manual or a sewing machine technician for adjustments or repairs.
2. Manually lower the feed dogs and then raise them again to see if they are moving uniformly.
3. If the feed dogs remain uneven, consider seeking professional assistance to resolve the issue.
4. In the meantime, try using a walking foot attachment to aid in the even feeding of fabrics.

24. Inconsistent Thread Tension

Description of the Problem: The thread tension on the Janome Sewist 721 is inconsistent, resulting in irregular stitches and sewing difficulties.
Cause of the Problem: Inconsistent thread tension can be caused by issues with the tension discs, incorrect threading, or lint buildup in the tension mechanism.
Troubleshooting Step-by-Step:
1. Check the tension discs for any debris or lint buildup and clean the area around the thread path.
2. Rethread the machine, ensuring the thread is correctly seated in the tension discs and the take-up lever.
3. Test the machine on a scrap fabric after rethreading and cleaning to see if the tension issue is resolved.
4. If the problem persists, consider adjusting the tension settings or consult the user manual for guidance on tension adjustments for specific sewing tasks.

25. Uneven Seam Allowance

Description of the Problem: The Janome Sewist 721 creates uneven seam allowances while sewing, leading to misaligned seams and inconsistencies.
Cause of the Problem: Uneven seam allowances can occur due to inaccurate fabric feeding or uneven pressure on the fabric while sewing.
Troubleshooting Step-by-Step:
1. Ensure the fabric is guided evenly and smoothly through the machine during sewing.
2. Check the presser foot pressure and adjust it accordingly for the fabric type to ensure even fabric feeding.
3. Use guides or markings on the throat plate to help maintain a consistent seam allowance.
4. Practice sewing on a scrap fabric to improve your sewing control and achieve more precise seam allowances.

Janome Sewist 721 Sewing Machine User Reviews

Positive Reviews from Janome Sewist 721 Sewing Machine Users

Some users were satisfied with the following parameters associated with their positive experiences:
- Smooth stitching and quiet operation, making sewing a pleasant and peaceful experience.
- High sewing speed and efficient performance, allowing for quick completion of sewing projects.
- Rugged build and excellent durability, providing reliability for various sewing tasks, including working with thick fabrics like denim.
- Easy to learn and use, making it suitable for both beginners and experienced sewists.
- Consistent and even stitches, resulting in professional-looking finished projects.

Many users appreciated the Janome Sewist 721 sewing machine for its reliability and versatility. The positive feedback highlighted its smooth and quiet operation, which contributed to a pleasant sewing experience.

Sewists admired the machine’s high sewing speed, allowing them to complete projects efficiently. The rugged construction and durability of the machine were praised, as it handled heavy fabrics with ease, providing confidence in its long-term performance.

Beginners and experienced sewists alike found the Janome Sewist 721 easy to learn and use. Its user-friendly features and straightforward controls made it accessible for those new to sewing and a joy to operate for seasoned users.

The machine’s ability to consistently produce even stitches was also commended, resulting in professional-looking finished projects.

Negative User Reviews of the Janome Sewist 721 Sewing Machine

Some users were not satisfied with the following problems associated with their experiences:
- Issues with the needle threader, which did not function properly for some users.
- Complaints about receiving the machine in damaged packaging or with broken components.
- Occasional tangling of thread in the bobbin area, leading to sewing difficulties.
- Needle hitting the presser foot during sewing, causing damage to both the needle and the foot.
- Inconsistent thread tension, resulting in irregular stitches and sewing difficulties.

Despite the overall positive feedback, some users encountered certain issues with the Janome Sewist 721 sewing machine. A few users reported problems with the needle threader, which did not function as expected, causing inconvenience during threading.

There were complaints about receiving the machine in damaged packaging or with broken components, which impacted the initial user experience. Additionally, some users faced challenges with occasional tangling of thread in the bobbin area, leading to sewing difficulties.

A few users also experienced the needle hitting the presser foot during sewing, causing damage to both components. Inconsistent thread tension was another concern, resulting in irregular stitches and sewing difficulties for some users.

It’s important to note that while some users encountered these issues, they may not represent the overall experience of all customers.

All information about user reviews is taken from the site Walmart.com.

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Janome Sewist 721 Sewing Machine Manual

The operating instructions for the Janome Sewist 721 sewing machine can be found on the manufacturer’s website. You can access the manual by visiting the official Janome website and navigating to the product support or downloads section.

The manual provides comprehensive guidance on how to set up, operate, and maintain the sewing machine, making it a valuable resource for users.

Janome Sewist 721 Frequently Asked Questions

1. How do I thread the Janome Sewist 721 sewing machine?

Threading the Janome Sewist 721 sewing machine involves passing the thread through specific guides and tension discs. Start by following the threading path indicated in the user manual. Make sure to thread the needle properly and engage the needle threader if applicable.

2. What are the recommended maintenance procedures for the Janome Sewist 721?

Regular maintenance is essential to keep the Janome Sewist 721 in optimal condition. Some recommended maintenance procedures include cleaning the machine after each use, oiling the designated points as per the manual, and keeping the bobbin area free from lint and debris. It’s also important to have the machine serviced by a professional technician periodically.

3. Can the Janome Sewist 721 sew through thick fabrics like denim?

Yes, the Janome Sewist 721 is designed to handle a variety of fabrics, including denim. Its rugged build and powerful motor enable it to sew through thick fabrics with ease. When sewing thick fabrics, it’s advisable to use the appropriate needle size and adjust the presser foot pressure for optimal results.

4. How do I troubleshoot stitching issues, such as skipped stitches or uneven tension?

If you encounter stitching issues like skipped stitches or uneven tension, start by rethreading the machine, ensuring the thread is correctly seated in the tension discs and the take-up lever. Check the needle for damage or bending and replace it if necessary. Balancing the upper and bobbin thread tension can also help resolve stitching problems. If the issues persist, refer to the user manual for further troubleshooting tips or consult a sewing machine technician.

5. Can I adjust the sewing speed on the Janome Sewist 721?

Yes, the Janome Sewist 721 allows you to adjust the sewing speed. It features a speed control slider or a foot pedal that allows you to control the stitching speed according to your preference and the complexity of your sewing project.

Conclusion

When facing any issues with your Janome Sewist 721 sewing machine, it’s recommended to refer to the user manual for guidance on troubleshooting and maintenance.

If you encounter persistent problems or have specific inquiries, don’t hesitate to reach out to the manufacturer’s customer service or a certified service center for professional assistance.

Proper care and attention to the machine’s maintenance can ensure years of seamless and enjoyable sewing experiences.