Introduction
This manual provides instructions for the installation, operation, and maintenance of your BAIJAC replacement bobbin winder. This component is designed to ensure proper bobbin winding functionality for compatible Kenmore sewing machine models.
Setup and Installation
Before beginning installation, ensure your sewing machine is turned off and unplugged from the power source to prevent accidental operation or injury.
- Identify the Existing Bobbin Winder: Locate the current bobbin winder mechanism on your Kenmore sewing machine. It is typically found near the handwheel or on the top right side of the machine.
- Remove the Old Bobbin Winder: Carefully detach the old bobbin winder. This may involve unscrewing a retaining screw or gently prying it off, depending on your specific machine model. Refer to your original Kenmore sewing machine manual for precise removal instructions if needed.
- Install the New BAIJAC Bobbin Winder: Align the BAIJAC replacement bobbin winder with the mounting point on your sewing machine. Gently push or secure it into place. If a screw was removed, reinsert and tighten it to hold the new winder firmly. Ensure it moves freely and engages correctly.

Image 1: The BAIJAC replacement bobbin winder. This image shows the bobbin winder component, featuring its main body, spindle, and engagement mechanism.
Operating Instructions
Once installed, the bobbin winder is ready for use. Follow these general steps to wind a bobbin:
- Place Thread Spool: Position your thread spool on the machine's spool pin.
- Guide Thread: Guide the thread through the machine's tension disc specifically designed for bobbin winding. This ensures even tension during winding.
- Insert Bobbin: Place an empty bobbin onto the spindle of the BAIJAC bobbin winder. Wrap the thread around the bobbin a few times clockwise to secure it.
- Engage Winder: Push the bobbin winder spindle towards the right (or as indicated by your machine's design) to engage it with the handwheel or winding mechanism.
- Start Winding: Gently press the foot pedal or start button. The bobbin will begin to spin and fill with thread. The winder typically stops automatically when the bobbin is full.
- Disengage and Remove: Once winding is complete, disengage the bobbin winder by pushing it back to its original position. Cut the thread and remove the full bobbin.
Maintenance
Regular maintenance ensures the longevity and proper function of your bobbin winder.
- Cleaning: Periodically clean the bobbin winder spindle and surrounding area with a soft, dry cloth to remove lint and dust accumulation.
- Inspection: Check for any signs of wear or damage. Ensure the winder moves smoothly and engages properly.
- Lubrication: The bobbin winder typically does not require lubrication. Refer to your Kenmore sewing machine's original manual for specific lubrication points on the machine itself.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Bobbin not winding evenly. | Incorrect thread tension or improper thread path. | Ensure thread is correctly routed through the bobbin winding tension disc. Adjust tension if possible (refer to machine manual). |
| Bobbin winder not engaging. | Winder not pushed fully into position or obstruction. | Push the winder firmly to engage. Check for lint or debris preventing full engagement. |
| Bobbin winder not stopping when full. | Automatic stop mechanism is faulty or obstructed. | Manually stop winding when bobbin is full. Inspect the automatic stop lever for debris or damage. |
Specifications
- Product Type: Replacement Bobbin Winder
- Brand: BAIJAC
- Compatible Kenmore Models: 385.18230790, 385.18330, 385.18330990, 385.18630, 385.18630890
- ASIN: B0B8ZRTQ3R
- Manufacturer: BAIJAC
- Date First Available: July 27, 2022
Customer Support
For further assistance or inquiries regarding this BAIJAC replacement bobbin winder, please contact your retailer or refer to the support information provided with your original purchase.