Janome JN-51 Common Problems and Troubleshooting

Welcome to our article on Janome JN-51 Common Problems and Troubleshooting. As sewing enthusiasts, we understand how frustrating it can be when your beloved Janome JN-51 sewing machine encounters issues.

In this guide, we’ll address some of the common problems that users may face with this specific model and provide troubleshooting tips to help you get back to sewing smoothly.

Janome JN-51 Overview

The Janome JN-51 is a high-quality sewing machine designed to meet all your stitching needs. It boasts a compact and sleek design, with product dimensions of 17.4″D x 40.6″W x 29.8″H and weighs 16.75 pounds, making it easy to move and store.

Powered by corded electric, this machine offers a power consumption of 35 W, ensuring efficient operation.

Product Details and Features

Brand	Janome
Product Dimensions	17.4″D x 40.6″W x 29.8″H
Item Weight	16.75 Pounds
Power Source	Corded Electric
Is Electric	Yes
Power	AC 100 V ※You need a transformer to use this item.
Power Consumption	35 W
Size	W40.6 ｘ L17.4 ｘ H29.8 cm
Weight	5.5 kg
Operating Instructions	Japanese ※with Description DVD
Package Dimensions	18.9 x 14.57 x 9.84 inches
Manufacturer	JANOME
ASIN	B007T38FKI
Item model number	JN-51

Causes of Common Problems with the Janome JN-51

Before we dive into the troubleshooting steps, let’s explore some of the common problems that users may encounter while using the Janome JN-51 sewing machine. In the following subsections, we’ll address each issue and provide solutions to get your sewing machine back in perfect working condition.

1. Bobbin Thread Tangles – Thread Jamming

Description: One of the common issues with the Janome JN-51 is the bobbin thread getting tangled or jammed during sewing, leading to frustration and disrupted stitching.

Cause: The bobbin thread tangling may occur due to incorrect threading of the bobbin, using low-quality or thick thread, or improper tension settings.

Troubleshooting:

• Step 1: Turn off the sewing machine and remove the bobbin case to untangle the thread carefully.
• Step 2: Rethread the bobbin following the user manual’s instructions, ensuring the thread is properly wound and inserted.
• Step 3: Check the thread quality and use a suitable, high-quality thread recommended for the Janome JN-51.
• Step 4: Adjust the thread tension settings as per the fabric being used and the type of stitch required.

2. Skipped Stitches – Needle Issues

Description: If you notice that your Janome JN-51 is skipping stitches during sewing, it could be due to needle-related problems.

Cause: Skipped stitches are often caused by a bent or dull needle, using the wrong needle size for the fabric, or not inserting the needle properly.

Troubleshooting:

• Step 1: Stop sewing and turn off the machine to avoid further damage.
• Step 2: Replace the needle with a new one of the appropriate size and type for the fabric you are working on.
• Step 3: Make sure the needle is inserted correctly and securely into the needle holder.
• Step 4: Check the needle plate and remove any lint or debris that might be affecting the stitching.

3. Uneven Stitching – Feed Dog and Pressure Foot

Description: Uneven stitches can ruin the appearance of your sewing project and may be a result of inconsistent fabric feeding.

Cause: The feed dog, responsible for moving the fabric, might be misaligned or covered with lint, and the pressure foot may not be applying even pressure.

Troubleshooting:

• Step 1: Turn off the machine and remove the fabric to avoid further damage.
• Step 2: Clean the feed dog area and remove any lint or debris that may be obstructing its movement.
• Step 3: Check the alignment of the feed dog and adjust it if necessary using the machine’s user manual as a guide.
• Step 4: Ensure the pressure foot is properly attached and applying even pressure on the fabric while sewing.

4. Thread Breaking – Tension Issues

Description: Frequent thread breakage can be frustrating and may hinder your sewing progress on the Janome JN-51.

Cause: Incorrect thread tension settings, using an old or low-quality thread, or a threading issue can lead to thread breakage.

Troubleshooting:

• Step 1: Stop sewing and turn off the machine to prevent further issues.
• Step 2: Check the thread path and ensure that the thread is correctly threaded through all the guides and tension discs.
• Step 3: Adjust the thread tension settings as per the recommended settings for the type of fabric you are using.
• Step 4: Use high-quality thread suitable for the Janome JN-51 to reduce the chances of thread breakage.

5. Machine Jamming – Bobbin and Hook Area

Description: If your Janome JN-51 is jamming and you are unable to sew smoothly, it could be due to issues in the bobbin and hook area.

Cause: The jamming might occur due to lint or thread debris buildup in the bobbin case and hook area, or a misaligned hook.

Troubleshooting:

• Step 1: Turn off the sewing machine and remove the fabric to prevent any further damage.
• Step 2: Open the bobbin case and clean out any lint or debris present in the bobbin area using a brush or a lint roller.
• Step 3: Check for any misalignment in the hook area and adjust it as per the machine’s user manual.
• Step 4: After cleaning and adjusting, reassemble the bobbin and hook area carefully.

6. Excessive Noise – Mechanical Issues

Description: If your Janome JN-51 is making unusual or excessive noise during operation, it could indicate underlying mechanical issues.

Cause: The noise may be caused by loose or worn-out machine parts, improper lubrication, or a misaligned mechanism.

Troubleshooting:

• Step 1: Turn off the sewing machine and unplug it from the power source.
• Step 2: Check for any loose screws or parts and tighten them if necessary.
• Step 3: Lubricate the moving parts as per the manufacturer’s recommendations.
• Step 4: If the noise persists, consider seeking professional assistance for further diagnosis and repair.

7. Needle Breakage – Wrong Needle Usage

Description: Frequent needle breakage can disrupt your sewing project and may result from using the wrong type or size of needle.

Cause: The needle may break if it’s too thin or thick for the fabric, or if it encounters resistance while sewing multiple layers.

Troubleshooting:

• Step 1: Stop sewing immediately when the needle breaks and turn off the machine.
• Step 2: Replace the broken needle with a new one that matches the fabric and thread you are using.
• Step 3: Avoid sewing through thick or multiple layers without the appropriate needle and thread.
• Step 4: Double-check the needle position and ensure it is correctly inserted into the needle holder.

8. Uneven Feed – Feed Dog Issues

Description: If your fabric is not feeding evenly through the Janome JN-51, it can lead to uneven stitching and misaligned seams.

Cause: The feed dog may not be rising properly, or there might be dirt or debris obstructing its movement.

Troubleshooting:

• Step 1: Turn off the sewing machine and remove the fabric to avoid any further issues.
• Step 2: Check the feed dog for any obstructions and clean the area thoroughly.
• Step 3: Ensure the feed dog is rising and lowering correctly as you turn the handwheel manually.
• Step 4: If the feed dog is not functioning correctly, consider contacting a qualified technician for repair.

9. Stitch Irregularities – Thread Tension Adjustment

Description: Inconsistent stitches and thread loops on the fabric surface are signs of stitch irregularities.

Cause: Incorrect thread tension settings, improper threading, or lint buildup in the tension discs can lead to this issue.

Troubleshooting:

• Step 1: Stop sewing and turn off the machine to prevent any further damage.
• Step 2: Check the thread path and ensure it is correctly threaded through all the guides and tension discs.
• Step 3: Adjust the thread tension settings gradually, testing the stitches on a scrap fabric until the desired results are achieved.
• Step 4: Regularly clean the tension discs and remove any accumulated lint or debris to maintain smooth sewing.

10. Bobbin Winding Difficulties – Bobbin Winder Alignment

Description: If you encounter issues while winding the bobbin, it may affect the overall sewing process.

Cause: The bobbin winder spindle may be misaligned, or the bobbin winding mechanism may have some faults.

Troubleshooting:

• Step 1: Turn off the sewing machine and unplug it from the power source.
• Step 2: Check the alignment of the bobbin winder spindle and make adjustments if necessary.
• Step 3: Ensure that the bobbin is inserted correctly and securely on the bobbin winder.
• Step 4: If the problem persists, consult the user manual or contact Janome customer support for assistance.

11. Thread Snapping – Needle and Thread Mismatch

Description: Thread snapping or breaking during sewing can be frustrating and disrupt your sewing workflow.

Cause: Using the wrong type or weight of thread for the needle, or using a damaged or old thread can lead to thread snapping.

Troubleshooting:

• Step 1: Stop sewing and turn off the machine to prevent any further issues.
• Step 2: Replace the broken thread with a new one that matches the needle and fabric you are using.
• Step 3: Check the needle size and type to ensure it is appropriate for the thread you’re using.
• Step 4: Always use high-quality thread to reduce the chances of thread snapping.

12. Machine Skips Stitches – Bobbin and Thread Tension

Description: If your Janome JN-51 skips stitches occasionally, it can affect the overall appearance of your sewing project.

Cause: Incorrect bobbin tension, improper threading, or a damaged needle may cause the machine to skip stitches.

Troubleshooting:

• Step 1: Stop sewing and turn off the machine to prevent any further damage.
• Step 2: Check the bobbin tension and adjust it as per the machine’s user manual.
• Step 3: Rethread the machine, ensuring the thread is correctly guided through all the threading points.
• Step 4: Replace the needle with a new one if it is damaged or worn out.

13. Uneven Bobbin Tension – Bobbin Case Adjustment

Description: Uneven tension in the bobbin thread can lead to irregular stitches on the underside of your fabric.

Cause: The bobbin case may not be inserted or adjusted properly, or there could be lint and debris in the bobbin case area.

Troubleshooting:

• Step 1: Turn off the sewing machine and remove the fabric to avoid any further issues.
• Step 2: Check the bobbin case for any obstructions and clean the area thoroughly.
• Step 3: Reinsert the bobbin case correctly, ensuring it is securely in place.
• Step 4: Adjust the bobbin tension as per the machine’s user manual to achieve even stitches.

14. Fabric Jamming in the Feed Dog – Incorrect Fabric Handling

Description: Fabric jamming in the feed dog can halt your sewing progress and cause damage to the material.

Cause: Forcing thick or slippery fabrics, or not guiding the fabric properly while sewing, can cause fabric jamming.

Troubleshooting:

• Step 1: Stop sewing immediately when the fabric jams and turn off the machine.
• Step 2: Carefully remove the fabric from the feed dog, ensuring not to damage the material or the machine.
• Step 3: Use the appropriate presser foot and needle for the fabric you are sewing.
• Step 4: Guide the fabric gently and evenly through the machine, allowing the feed dog to move it smoothly.

15. Bobbin Running Out Quickly – Bobbin Thread Wastage

Description: If you find that your bobbin thread runs out too quickly, it can disrupt your sewing flow.

Cause: Inconsistent bobbin winding or using too much thread tension while winding the bobbin can lead to thread wastage.

Troubleshooting:

• Step 1: Stop sewing and turn off the machine to prevent any further issues.
• Step 2: Wind the bobbin slowly and evenly, avoiding excessive tension while winding.
• Step 3: Check the bobbin thread path and ensure it is correctly threaded through the bobbin case.
• Step 4: If the problem persists, consider adjusting the bobbin tension or consult a professional technician for assistance.

16. Needle Position Inaccuracy – Misaligned Needle Bar

Description: If the needle position is off, it can lead to uneven stitching and misalignment of seams.

Cause: The needle bar might be misaligned due to incorrect handling or accidental bumping.

Troubleshooting:

• Step 1: Stop sewing and turn off the machine to avoid any further issues.
• Step 2: Carefully check the needle bar alignment, adjusting it if necessary using the machine’s user manual as a guide.
• Step 3: Ensure the needle is correctly inserted and tightened in the needle holder.
• Step 4: Test the needle position on a scrap fabric to verify its accuracy before continuing your project.

17. Thread Looping on the Underside – Upper Thread Tension

Description: Excessive thread looping on the underside of the fabric can be a sign of upper thread tension issues.

Cause: Incorrect upper thread tension settings or improper threading can cause thread looping.

Troubleshooting:

• Step 1: Stop sewing and turn off the machine to prevent any further damage.
• Step 2: Check the upper thread tension settings and adjust them gradually until the loops are eliminated.
• Step 3: Rethread the machine properly, ensuring the thread passes through all the threading points as per the user manual.
• Step 4: Test the stitches on a scrap fabric to ensure the tension is adjusted correctly for your project.

18. Needle Threader Malfunction – Alignment Issue

Description: If the needle threader fails to work, it can be challenging to thread the needle accurately.

Cause: The needle threader might be misaligned, or there could be dirt or debris obstructing its movement.

Troubleshooting:

• Step 1: Turn off the sewing machine and unplug it from the power source.
• Step 2: Check the alignment of the needle threader and adjust it if needed using the machine’s user manual as a guide.
• Step 3: Clean the needle threader area to remove any lint or debris that might be affecting its operation.
• Step 4: If the needle threader continues to malfunction, consider seeking professional assistance for repair.

19. Feed Dog Not Moving – Disengaged Feed Dog

Description: If the feed dog fails to move the fabric, it can lead to difficulty in stitching or fabric feeding.

Cause: The feed dog might be disengaged accidentally or due to a mechanical issue.

Troubleshooting:

• Step 1: Turn off the sewing machine and remove the fabric to avoid any further issues.
• Step 2: Check the feed dog lever or button and make sure it is engaged to the correct position.
• Step 3: Turn the handwheel manually to check if the feed dog rises and moves the fabric.
• Step 4: If the feed dog still does not move, consult the user manual or contact Janome customer support for assistance.

20. Stitches Puckering – Fabric and Thread Mismatch

Description: Puckered stitches can give an unprofessional look to your sewing project and may occur due to fabric and thread mismatch.

Cause: Using a thread that is too thick or thin for the fabric, or sewing dense fabrics with a standard needle, can cause puckering.

Troubleshooting:

• Step 1: Stop sewing and turn off the machine to prevent any further damage.
• Step 2: Use the appropriate thread weight and type for the fabric you are working with.
• Step 3: Choose a suitable needle size and type, especially when sewing dense or heavy fabrics.
• Step 4: Test the stitching on a scrap fabric before proceeding with your main project to ensure a smooth result.

21. Thread Fraying – Dull Needle or Incorrect Threading

Description: If the thread frays or shreds while sewing, it can affect the quality and strength of your stitches.

Cause: A dull needle or incorrect threading can lead to thread fraying during sewing.

Troubleshooting:

• Step 1: Stop sewing and turn off the machine to prevent any further damage.
• Step 2: Replace the needle with a new one that matches the fabric and thread you are using.
• Step 3: Rethread the machine, ensuring the thread is correctly guided through all the threading points.
• Step 4: Test the stitching on a scrap fabric to ensure the thread no longer frays.

22. Bobbin Not Winding – Bobbin Winder Mechanism

Description: If the bobbin does not wind properly, it can disrupt your sewing process and affect the bobbin thread supply.

Cause: The bobbin winder mechanism may be faulty or improperly engaged.

Troubleshooting:

• Step 1: Turn off the sewing machine and unplug it from the power source.
• Step 2: Check the bobbin winder engagement and make sure it is correctly set to wind the bobbin.
• Step 3: If the problem persists, consider seeking professional assistance for repair or replacement.
• Step 4: In the meantime, you can manually wind the bobbin by disengaging the bobbin winder and using a separate bobbin winder if available.

23. Needle Heat – Continuous Sewing

Description: If the needle becomes hot during extended sewing sessions, it can lead to discomfort and potential thread breakage.

Cause: Continuous sewing without breaks can cause the needle to heat up due to friction and pressure.

Troubleshooting:

• Step 1: Take breaks during long sewing sessions to allow the needle to cool down.
• Step 2: Avoid sewing at high speeds for extended periods to reduce needle friction.
• Step 3: Use a high-quality, heat-resistant needle to withstand prolonged sewing without heating up.
• Step 4: Consider using a cooling tool to reduce needle temperature during long sewing sessions.

24. Inconsistent Stitch Length – Feed Dog or Tension Issue

Description: If the stitch length varies despite setting a specific length, it can affect the appearance of your sewing project.

Cause: Feed dog irregularities or improper thread tension can lead to inconsistent stitch lengths.

Troubleshooting:

• Step 1: Stop sewing and turn off the machine to avoid any further damage.
• Step 2: Check the feed dog for any obstructions and clean the area thoroughly.
• Step 3: Adjust the thread tension settings gradually until the desired stitch length is achieved.
• Step 4: Test the stitches on a scrap fabric to ensure the stitch length is consistent.

25. Bobbin Thread Not Catching – Bobbin Case Alignment

Description: If the bobbin thread fails to catch while sewing, it can lead to loose or unsecured stitches.

Cause: The bobbin case may be misaligned or not inserted properly, preventing the bobbin thread from catching.

Troubleshooting:

• Step 1: Turn off the sewing machine and remove the fabric to avoid any further issues.
• Step 2: Check the alignment of the bobbin case and reinsert it correctly.
• Step 3: Test the bobbin thread catching by gently pulling the top thread with the needle raised.
• Step 4: If the problem persists, consider seeking professional assistance for bobbin case adjustment or replacement.

Janome JN-51 Sewing Machine User Reviews

Positive Reviews from Janome JN-51 Sewing Machine Users

• Some users were satisfied with the sewing machine’s strength, despite its small motor.
• Many users appreciated the included DVD for handling, which helped beginners and intermediate users with its easy-to-follow instructions.
• The affordability of the computerized sewing machine was praised, especially considering its ability to set stitch roughness and sewing width of zigzag stitches.
• Users felt confident in their purchase due to the reliability of the Janome brand.
• Novice sewers found the Janome JN-51 easy to understand and use, even without prior experience.
• Users commended the sewing machine’s quiet and smooth operation, providing a non-stressful sewing experience with minimal thread tangling.
• One user, a frequent dressmaker, was impressed with the ease of use and considered it a good enough sewing machine for daily dressmaking needs.
• Parents were pleased with the sewing machine’s ease of use, mentioning that it was suitable for raising children and beginners.

Negative User Reviews of the Janome JN-51 Sewing Machine

• Some users encountered upper thread tension issues, resulting in bumpy and messy stitches.
• One user expressed disappointment with the performance of the automatic computer sewing machine, experiencing difficulty in sewing neatly.
• Another user faced problems with the auxiliary table, as it did not fit properly, and customer service did not provide a satisfactory resolution.
• One user reported that the sewing machine broke after about two years of use, experiencing issues with stitch suppression and fabric wrinkling.
• Despite having used the sewing machine for almost two years, some users found that it broke down, leading to frustration with repair costs and customer support.

All information about user reviews is sourced from Walmart.

Overall, the majority of users expressed satisfaction with the Janome JN-51 sewing machine, appreciating its strength, ease of use, and reliability. However, there were a few instances of negative feedback, primarily related to tension issues and quality concerns.

Despite these occasional drawbacks, the positive experiences of users outweighed the negative ones, making the Janome JN-51 a popular choice among customers.

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Janome JN-51 Sewing Machine Manual

The operating instructions for the Janome JN-51 sewing machine can be found on the manufacturer’s website. For detailed guidance on setting up and using your sewing machine, please visit the official Janome website and refer to the JN-51 sewing machine manual.

Janome JN-51 Frequently Asked Questions

1. How can I troubleshoot thread bunching under the fabric?

Thread bunching under the fabric is often caused by incorrect threading or improper bobbin placement. To resolve this issue, first, rethread the upper thread following the threading diagram in the manual. Also, ensure that the bobbin is inserted correctly and that the bobbin tension is properly adjusted.

2. Why is my sewing machine making loud noises during operation?

Loud noises during sewing can indicate mechanical issues. Turn off the machine, unplug it, and check for any loose screws or parts. Tighten them if necessary. If the noise persists, it might be best to seek professional assistance to diagnose and repair any underlying mechanical problems.

3. How do I prevent skipped stitches while sewing?

Skipped stitches may occur due to a dull or bent needle. Ensure you are using a fresh, high-quality needle suitable for the fabric type. Also, verify that the needle is correctly inserted and securely tightened in the needle holder. If the problem continues, check the needle size and type to ensure it matches the fabric and thread being used.

4. My machine’s feed dog is not moving. What should I do?

If the feed dog is not moving, check the feed dog lever or button and ensure it is engaged properly. Additionally, examine the feed dog area for any obstructions or debris that might be preventing its movement. If the feed dog continues to malfunction, consult the user manual or contact Janome customer support for assistance.

5. How do I avoid fabric jamming in the feed dog?

To prevent fabric jamming in the feed dog, avoid forcing thick or slippery fabrics through the machine. Use the appropriate presser foot and needle for the fabric type, and guide the fabric gently and evenly, allowing the feed dog to move it smoothly.

Conclusion

When encountering any issues with your Janome JN-51 sewing machine, always refer to the manual, contact customer service, or visit an authorized service center whenever possible. Proper maintenance, adherence to operating instructions, and timely troubleshooting can help ensure optimal performance and longevity of your sewing machine.