evernice Shuttle Hook and Small Bobbin Instruction Manual

1. Introduction

This manual provides essential information for the installation, operation, and maintenance of the evernice Shuttle Hook and Small Bobbin assembly. This replacement part is designed for specific Singer 29K Class sewing machines.

The assembly includes the main shuttle hook (Part # 8603, also referred to as 8654), a tension spring (Part # 8611), and a tension adjustment screw (Part # 662). It is compatible with Singer sewing machine models 29-1, 29K71, 29K73, 29K171, 29U171A, 29U173A, and 29K58.

Figure 1: The evernice Shuttle Hook and Small Bobbin assembly.

2. Setup and Installation

Before installation, ensure your sewing machine is turned off and unplugged from the power source. Refer to your specific Singer 29K machine's service manual for detailed instructions on accessing and removing the existing shuttle hook assembly.

1. Verify Compatibility: Confirm that this shuttle hook is the correct size and type for your Singer 29K machine. The inner diameter of the bobbin case area of this shuttle hook measures approximately 16.00 mm.


Figure 2: The inner diameter of the shuttle hook is approximately 16.00 mm.

2. Remove Old Assembly: Carefully remove the old shuttle hook and bobbin case from your sewing machine. Note the orientation and placement of all components.
3. Install New Shuttle Hook: Insert the evernice shuttle hook (Part # 8603) into its designated position. Ensure it seats correctly and moves freely.
4. Install Tension Spring and Screw: Attach the tension spring (Part # 8611) and the tension adjustment screw (Part # 662) to the shuttle hook as per your machine's design.
5. Test Movement: Manually turn the machine's handwheel to ensure the shuttle hook mechanism operates smoothly without obstruction.

3. Operating Instructions

Once the shuttle hook is installed, proper bobbin winding and insertion are crucial for correct machine operation.

1. Winding the Bobbin: Wind your small bobbin according to your Singer 29K machine's instructions. Ensure the thread is evenly and securely wound.
2. Inserting the Bobbin: Place the wound bobbin into the shuttle hook's bobbin case. Ensure the thread feeds through the tension spring correctly. The thread should pull smoothly with a slight resistance.
3. Threading the Shuttle: Follow your machine's specific threading path for the shuttle hook. The thread must pass through any guides or slots on the shuttle hook assembly.
4. Adjusting Tension: The tension of the bobbin thread is controlled by the tension adjustment screw (Part # 662) on the shuttle hook. Turn the screw clockwise to increase tension and counter-clockwise to decrease it. Adjust as needed to achieve balanced stitches with the upper thread tension.

Figure 3: A component of the shuttle hook, highlighting the area for tension adjustment.

4. Maintenance

Regular maintenance of the shuttle hook assembly ensures optimal performance and extends the life of your sewing machine.

• Cleaning: Periodically remove the shuttle hook and bobbin case. Use a small brush or lint picker to remove any lint, dust, or thread fragments that accumulate in and around the shuttle race.
• Lubrication: Apply a small drop of high-quality sewing machine oil to the moving parts of the shuttle hook and the shuttle race, as recommended by your sewing machine's manufacturer. Avoid over-oiling.
• Inspection: Regularly inspect the shuttle hook for any signs of wear, burrs, or damage that could snag thread or affect stitch quality. Replace the part if significant wear is observed.

5. Troubleshooting

If you encounter issues after installing the evernice Shuttle Hook, consider the following common troubleshooting steps:

• Skipped Stitches: Ensure the needle is correctly inserted, not bent, and is the appropriate type and size for your fabric and thread. Verify the shuttle hook timing is correct (refer to your machine's service manual).
• Thread Breakage: Check for burrs or rough spots on the shuttle hook or bobbin case that could be snagging the thread. Ensure the bobbin is wound evenly and not overfilled. Adjust bobbin tension if it is too tight.
• Uneven Stitches or Looping: This often indicates incorrect thread tension. Adjust the bobbin tension screw (Part # 662) incrementally until stitches are balanced. Also, check the upper thread tension.
• Bobbin Not Fitting: Ensure you are using the correct type of small bobbin for this shuttle hook. While this shuttle hook is designed for small bobbins, variations exist.

6. Specifications

7. Warranty and Support

Warranty information for this evernice product is not provided in this manual. For details regarding warranty coverage, returns, or technical support, please contact the seller or the evernice manufacturer directly. Keep your purchase receipt as proof of purchase.