Product Overview
This document provides instructions for the CKPSMS Bobbin Cover Plate, part number XF2404001. This component is designed as a replacement part for compatible sewing machines, protecting the bobbin area during operation.

Image: The CKPSMS Bobbin Cover Plate (XF2404001). This is a clear plastic cover that sits over the bobbin area of a sewing machine, protecting the bobbin and allowing visibility of the thread supply. It features small tabs for secure placement and removal.
Compatibility
The CKPSMS Bobbin Cover Plate (Part Number XF2404001, alternative part number XE9331001) is compatible with a wide range of Brother and Simplicity sewing machine models. Please verify your machine's model number against the list below to ensure proper fit.
Compatible Brother Sewing Machine Models:
- BB370
- BM2800, BM2800CT, BM2800FG, BM3550FG
- BM3700, BM3700CT, BM3700FG
- BM3850, BM3850CT
- GS2700, GS2786K, GS3700, GS3710, GS3740C
- Hanami 27s, Hanami 37S
- J17, JX2517, LS17
- LX-2500, LX2763, LX3850
- RS40S, RS45S, SB170, SB530T
- SM3701, Star 27S, Star 37S
- XL2500, XM2701, XM3700, XM1700
- XQ2700, XQ3700, XR53
Compatible Simplicity Sewing Machine Models:
- SB530t
Important Note:
Always compare the dimensions of your existing bobbin cover plate with the product dimensions provided to ensure compatibility. Refer to the image below for detailed measurements.

Image: Detailed dimensions of the bobbin cover plate, showing its length (42.9mm), width (45.5mm), and height (34mm). An inset image demonstrates the plate correctly installed in the bobbin area of a sewing machine, highlighting its placement relative to the needle plate.
Installation (Setup)
Follow these steps to install the bobbin cover plate:
- Ensure your sewing machine is turned off and unplugged for safety.
- Locate the bobbin area on your sewing machine, typically beneath the needle plate.
- If a broken or old bobbin cover plate is present, gently remove it. Some plates may have a small tab or lever for release.
- Align the new CKPSMS Bobbin Cover Plate (XF2404001) with the opening. The small tabs on the plate should fit into the corresponding slots on the machine.
- Gently press down until the plate clicks securely into place. It should sit flush with the sewing machine's surface.
- Verify that the plate is stable and does not wobble. If it does, remove and re-seat it.
For visual guidance, please refer to your sewing machine's original instruction manual for specific bobbin cover plate removal and installation procedures, as designs may vary slightly.
Operation
The bobbin cover plate is a static component designed to protect the bobbin and the bobbin case mechanism during sewing operations. Once correctly installed, no further operational steps are required for the plate itself. It allows for visual monitoring of the bobbin thread without interruption.
Maintenance
To ensure optimal performance and longevity of your bobbin cover plate and sewing machine:
- Cleaning: Periodically remove the bobbin cover plate and gently wipe it with a soft, dry cloth to remove lint and dust accumulation. Avoid using harsh chemicals or abrasive materials.
- Inspection: Regularly inspect the plate for any cracks, chips, or damage. A damaged plate can interfere with thread movement or proper bobbin function.
- Storage: If removing the plate for extended periods, store it in a safe place to prevent damage or loss.
Troubleshooting
- Plate does not fit: Double-check your sewing machine model against the compatibility list. Ensure the plate is oriented correctly. If it still does not fit, the part may not be compatible with your specific machine. Refer to the product dimensions.
- Plate is loose or falls off: Ensure the plate is fully seated and the tabs are engaged. If the tabs appear worn or broken, the plate may need replacement.
- Thread snags around the plate: Remove the plate and clean any lint or debris from the bobbin area. Ensure the bobbin is correctly inserted and threaded according to your machine's manual. Reinstall the plate securely.
Specifications
- Part Number: XF2404001 (Alternative: XE9331001)
- Part Name: Bobbin Cover Plate
- Material: Plastic
- Dimensions: Length: 42.9 mm, Width: 45.5 mm, Height: 34 mm (approximate, as shown in image)
- Weight: Approximately 0.317 ounces
- Manufacturer: CKPSMS
Technical Support
For any questions regarding compatibility, installation, or issues encountered with your CKPSMS Bobbin Cover Plate, please contact our technical support team.
- Contact Method: Send a message via Amazon.
- Response Time: Our technicians aim to provide professional and accurate advice within 24 hours, 7 days a week.
- Information Required: When contacting support, please provide your sewing machine's brand and complete model number for efficient assistance.