1. Introduction and Overview
This manual provides essential information for the proper use and maintenance of SINGER Class 15 Transparent Plastic Bobbins. These bobbins are designed to ensure smooth and consistent stitching in compatible sewing machines.
The transparent design allows for easy monitoring of thread levels, preventing unexpected interruptions during sewing projects. This pack includes four (4) Class 15 bobbins, which are flat on both the top and bottom surfaces.
Figure 1: SINGER Class 15 Transparent Bobbins in their retail packaging.
Compatibility: These bobbins are compatible with select SINGER machines that use a plastic Class 15 bobbin, as well as various models from Atlas, Brother, Domestic (rotary), Elna, Kenmore (rotary), Morse, Necchi, New Home (rotary/old style), Pfaff, Sewmore, Universal, White (rotary), and Wizard machines. Always consult your sewing machine's manual to confirm bobbin compatibility before use.
2. Setup
Proper setup of the bobbin is crucial for optimal sewing performance.
2.1 Winding the Bobbin
- Ensure you are using an empty SINGER Class 15 transparent bobbin.
- Place the empty bobbin onto the bobbin winder spindle of your sewing machine.
- Follow your sewing machine's specific instructions for threading the bobbin winding tension disk and guiding the thread to the bobbin.
- Begin winding the thread onto the bobbin. Ensure the thread winds evenly and smoothly. Do not overfill the bobbin.
- Once the bobbin is full, stop the winding process and trim the thread.
Figure 2: A set of four SINGER Class 15 Transparent Bobbins, ready for winding.
2.2 Inserting the Bobbin
Refer to your sewing machine's manual for precise instructions on inserting the bobbin into the bobbin case or shuttle mechanism. Generally, ensure the bobbin is oriented correctly so the thread unwinds in the proper direction as specified by your machine.
3. Operating Instructions
The bobbin thread forms the bottom part of your stitches, working in conjunction with the top spool thread to create strong, consistent seams.
- Thread Monitoring: The transparent nature of these bobbins allows you to easily see how much thread remains, helping you avoid running out of thread mid-seam.
- Consistent Tension: For best results, always use bobbins that match the class/style of those originally supplied with your machine. Ensure the bobbin is wound evenly and fully to maintain proper thread tension.
- Stitch Quality: Correct bobbin usage is vital for balanced stitches. If stitches appear uneven or loose on the underside of your fabric, check your bobbin winding and insertion.
Figure 3: Proper use of bobbins contributes to a smooth sewing experience.
4. Maintenance
While SINGER bobbins are durable, regular inspection is recommended to ensure continued performance.
- Inspection: Periodically inspect your bobbins for any signs of damage, such as chips, cracks, bends, or warping.
- Replacement: Immediately replace any bobbin that is chipped, bent, or damaged. Damaged bobbins can cause uneven stitching, thread tangling, or even damage to your sewing machine's bobbin case or shuttle.
- Cleaning: Keep bobbins free from lint and thread residue. A soft brush can be used to gently clean them if necessary.
5. Troubleshooting
If you encounter issues related to bobbin performance, consider the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Uneven stitches or skipped stitches | Incorrect bobbin size, improperly wound bobbin, damaged bobbin, or incorrect bobbin insertion. | Verify bobbin size with machine manual. Rewind bobbin evenly. Replace damaged bobbins. Reinsert bobbin correctly. |
| Thread tangling or breakage | Partially wound bobbin, damaged bobbin, or incorrect thread tension. | Always wind thread onto empty bobbins only. Replace damaged bobbins. Adjust machine's thread tension settings. |
| Machine jamming | Damaged bobbin or incorrect bobbin type/size. | Ensure you are using the correct Class 15 bobbin for your machine. Replace any damaged bobbins immediately. |
6. Specifications
- Product Type: Class 15 Transparent Plastic Bobbins
- Quantity: 4-Count
- Material: High-quality Plastic
- Dimensions: Approximately 0.51 x 1.89 x 5.87 inches (packaged)
- Item Weight: Approximately 0.32 ounces (packaged)
- Model Number: 02134
- Manufacturer: Dyno Merchandise (for SINGER)
- Key Feature: Flat top and bottom design, transparent for thread visibility.
Figure 4: Side view of SINGER Class 15 Bobbins, highlighting their flat design.
7. Warranty and Support
For specific warranty information regarding your SINGER Class 15 Transparent Bobbins, please refer to the original product packaging or visit the official SINGER website. Warranty terms may vary.
If you require further assistance or have questions not covered in this manual, please contact SINGER customer support through their official channels. Always provide your product model number (02134) when seeking support.
SINGER Official Website: www.singer.com
