JET JRB-14 Riser Block Kit Instruction Manual

1. Product Overview

The JET JRB-14 Riser Block Kit is designed to significantly enhance the cutting capacity of compatible JET 14-inch band saws. This kit allows users to increase the maximum depth of cut from 6 inches to 12 inches, accommodating larger workpieces and enabling more versatile resawing operations.

Image 1.1: The JET JRB-14 Riser Block Kit, showing the cast block, blade guards, guide post, and blade.

Constructed from durable materials, including a 6-inch cast block, the kit ensures stability and precision during operation. It includes all necessary components for installation, such as a long frame bolt, front and back blade guards, a 7/8-inch guide post, and a 105-inch blade.

2. Included Components

The JRB-14 Riser Block Kit comes with the following parts:

• 6-inch Cast Block: The primary component that extends the saw's frame.
• Long Frame Bolt: Used to secure the extended frame.
• Front Blade Guard: Provides protection for the front of the blade.
• Back Blade Guard: Provides protection for the back of the blade.
• 7/8-inch Guide Post: A longer guide post to accommodate the increased cutting height.
• 105-inch Blade: A new blade suitable for the extended cutting capacity.

3. Installation and Setup

This kit is specifically designed to fit the JET 14" Bandsaw (model 708115K). Installation involves integrating the riser block into the existing bandsaw frame to extend its height. While the process is generally straightforward, careful attention to detail is required to ensure proper alignment and functionality.

1. Preparation: Ensure the bandsaw is unplugged and all safety precautions are observed. Clear the work area.
2. Disassembly: Carefully remove the upper section of the bandsaw frame and the existing blade and guide post as per your bandsaw's original manual.
3. Riser Block Placement: Position the 6-inch cast block between the upper and lower sections of the bandsaw frame.
4. Secure with Long Frame Bolt: Use the provided long frame bolt to securely fasten the entire assembly, ensuring the riser block is firmly integrated.
5. Install New Guide Post: Replace the original guide post with the longer 7/8-inch guide post. Ensure it slides smoothly and locks into position.
6. Install Blade Guards: Attach the new front and back blade guards. Verify they are properly aligned and do not interfere with blade movement.
7. Install 105-inch Blade: Carefully install the new 105-inch blade, ensuring it is correctly tensioned and tracked according to your bandsaw's instructions.
8. Alignment Check: After assembly, meticulously check the alignment of all components, especially the blade guides, to prevent blade drift and ensure safe operation. Some users have reported that the guide post may require careful adjustment or even flipping to achieve proper alignment with roller bearings.

Image 3.1: The JET JRB-14 Riser Block seamlessly integrated into a JET 14-inch bandsaw, extending its cutting height.

4. Operating the Bandsaw with Riser Block

Once the JRB-14 Riser Block Kit is installed, your JET 14-inch bandsaw will have an increased cutting capacity of up to 12 inches. This allows for resawing thicker lumber and handling larger projects. Always ensure the blade is sharp and properly tensioned for the material being cut. Adjust the upper blade guide assembly to the appropriate height for your workpiece, ensuring it is as close as possible without touching the material.

For optimal performance and safety, always follow the general operating procedures outlined in your original JET 14-inch bandsaw manual, in addition to the enhanced capabilities provided by the riser block.

5. Maintenance

Regular maintenance of your bandsaw, including the riser block kit components, is crucial for longevity and safe operation. This includes:

• Cleaning: Keep the riser block, blade guards, and guide post free from sawdust and debris. Use compressed air or a brush.
• Lubrication: Periodically lubricate moving parts of the guide post and blade tensioning mechanisms as recommended in your bandsaw's main manual.
• Blade Inspection: Regularly inspect the blade for sharpness, cracks, or damage. Replace worn blades promptly.
• Component Check: Ensure all bolts and fasteners, especially the long frame bolt, remain tight. Check blade guards for any damage or misalignment.

6. Troubleshooting

If you encounter issues after installing the riser block, consider the following:

• Blade Tracking Issues: If the blade is not tracking correctly, re-check blade tension and wheel alignment. Ensure the riser block is installed squarely and not causing any frame distortion.
• Guide Post Alignment: If the upper blade guides do not align properly with the blade, verify the guide post is inserted correctly and not binding. As noted by some users, the guide post might need to be rotated or even flipped to achieve optimal alignment, especially if using aftermarket roller bearings.
• Excessive Vibration: Check all fasteners for tightness. Ensure the blade is properly tensioned and not damaged.
• Reduced Cutting Performance: Ensure the blade is sharp and appropriate for the material. Verify blade tension and guide settings.

For persistent issues, refer to your original JET 14-inch bandsaw manual or contact JET customer support.

7. Specifications

8. Warranty Information

The JET JRB-14 Riser Block Kit is backed by JET's industry-leading one-year limited warranty against manufacturing defects. This warranty covers defects in materials and workmanship under normal use and service.

Image 8.1: JET's 1-Year Warranty symbol.

For specific warranty terms, conditions, and claim procedures, please refer to the warranty documentation included with your product or visit the official JET Tools website.

9. Support and Contact

For further assistance, technical support, or to inquire about replacement parts, please contact JET Tools customer service. You can also find more information and resources on the official JET website or their Amazon brand store.

Visit the Official JET Store on Amazon