1. Introduction
This manual provides essential information for the safe operation, maintenance, and care of your RIDGID 18V BRUSHLESS Cordless Reciprocating Saw, Model R8647B. Please read this manual thoroughly before using the tool to ensure proper handling and to prevent injury or damage. Keep this manual accessible for future reference.
The RIDGID 18V BRUSHLESS Cordless Reciprocating Saw is designed for cutting various materials such as wood, metal, plastic, and composite materials, depending on the blade used. Its cordless design offers portability and convenience for a wide range of applications.
2. General Safety Information
WARNING: Read all safety warnings, instructions, illustrations, and specifications provided with this power tool. Failure to follow all instructions listed below may result in electric shock, fire, and/or serious injury.
- Work Area Safety: Keep your work area clean and well-lit. Cluttered or dark areas invite accidents. Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases, or dust.
- Electrical Safety: Avoid body contact with earthed or grounded surfaces such as pipes, radiators, ranges, and refrigerators. There is an increased risk of electric shock if your body is earthed or grounded.
- Personal Safety: Always wear eye protection. Use appropriate personal protective equipment such as dust masks, non-skid safety shoes, hard hats, or hearing protection when necessary. Stay alert, watch what you are doing, and use common sense when operating a power tool.
- Tool Use and Care: Do not force the power tool. Use the correct power tool for your application. It will do the job better and safer at the rate for which it was designed. Disconnect the battery pack from the power tool before making any adjustments, changing accessories, or storing power tools.
- Battery Tool Use and Care: Recharge only with the charger specified by the manufacturer. Use power tools only with specifically designated battery packs.
3. Package Contents
Upon opening the package, ensure all items are present and undamaged. If any parts are missing or damaged, contact RIDGID customer service immediately.
- RIDGID 18V BRUSHLESS Cordless Reciprocating Saw (Tool Only)
- Operator's Manual (this document)
Note: Battery pack and charger are sold separately and are not included with this 'tool only' model.
4. Components Overview
Familiarize yourself with the various parts of your reciprocating saw before operation.

Image 1: Side view of the RIDGID 18V BRUSHLESS Cordless Reciprocating Saw, showing the main body, handle, and blade clamp area.

Image 2: Angled view of the RIDGID 18V BRUSHLESS Cordless Reciprocating Saw, highlighting the grip, trigger, and the 'BRUSHLESS' branding.
- Trigger Switch: Activates the saw.
- Lock-Off Button: Prevents accidental starting.
- Blade Clamp: Secures the saw blade.
- Pivoting Shoe: Provides stability and depth control during cutting.
- Handle/Grip: Ergonomic design for comfortable and secure handling.
- Orbital Action Selector (if applicable): Adjusts the blade's cutting motion for different materials (refer to specific model features).
- Battery Port: Where the 18V battery pack is inserted.
5. Setup
5.1 Battery Installation
- Ensure the saw is turned off and the lock-off button is engaged.
- Align the ribs on the battery pack with the grooves in the saw's battery port.
- Slide the battery pack into the port until it clicks securely into place.
- To remove, press the battery release button and slide the battery pack out.
5.2 Blade Installation
WARNING: Always remove the battery pack before installing or removing blades.
- Locate the blade clamp lever or mechanism on the front of the saw.
- Rotate or pull the blade clamp lever to open the blade clamp jaws.
- Insert the shank of the reciprocating saw blade fully into the blade clamp jaws. Ensure the teeth of the blade are facing the correct direction for cutting.
- Release the blade clamp lever to secure the blade. Gently pull on the blade to confirm it is firmly locked in place.
- To remove, open the blade clamp lever and pull the blade out. Be cautious as the blade may be hot after use.
6. Operating Instructions
Before operating, ensure you have read and understood all safety warnings and setup procedures.
- Select the Correct Blade: Choose a blade appropriate for the material you intend to cut (e.g., wood, metal, demolition).
- Secure Workpiece: Always clamp or otherwise secure the material you are cutting to prevent movement during operation.
- Grip the Saw: Hold the saw firmly with both hands, ensuring a secure grip on the main handle and the front housing.
- Start the Cut: Place the pivoting shoe firmly against the workpiece. Press the lock-off button (if applicable), then squeeze the trigger switch to start the saw. Allow the saw to reach full speed before engaging the blade with the material.
- Cutting Action: Apply steady, moderate pressure. Let the saw do the work. Do not force the saw, as this can lead to blade breakage, overheating, and reduced control. Maintain contact with the pivoting shoe against the workpiece throughout the cut.
- Orbital Action (if available): If your saw features an orbital action selector, adjust it according to the material. Orbital action provides a more aggressive cut, suitable for wood, while linear action is better for metal and fine cuts.
- Finishing the Cut: As you near the end of a cut, be prepared for the workpiece to separate. Support the cut-off piece to prevent it from falling and causing injury or damage. Release the trigger switch completely before removing the saw from the workpiece.
7. Maintenance
Regular maintenance ensures the longevity and safe operation of your tool.
- Cleaning: Keep the tool's air vents clean and free of debris to prevent overheating. Use a clean, dry cloth to wipe down the tool. Do not use solvents or harsh chemicals.
- Blade Care: Inspect blades before each use for sharpness and damage. Replace dull or damaged blades immediately. Store blades properly to prevent damage.
- Battery Care: Store battery packs in a cool, dry place away from direct sunlight and extreme temperatures. Do not store battery packs in a discharged state for extended periods.
- Inspections: Periodically check all screws and fasteners for tightness. Ensure the blade clamp mechanism operates smoothly.
- Service: All internal service and repairs should be performed by a qualified service technician.
8. Troubleshooting
If you encounter issues with your saw, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Saw does not start | Battery not charged or improperly installed; Lock-off button not disengaged; Faulty trigger switch. | Ensure battery is fully charged and properly seated. Disengage lock-off button. If problem persists, contact service. |
| Blade not cutting effectively | Dull or incorrect blade; Insufficient pressure; Overheating. | Replace blade with a sharp, appropriate type. Apply steady, moderate pressure. Allow tool to cool if overheating. |
| Excessive vibration | Loose blade; Damaged blade; Internal issue. | Check blade for secure installation and damage. Replace if damaged. If vibration continues, seek professional service. |
| Saw stops during operation | Battery low; Overload protection activated; Blade binding. | Recharge or replace battery. Reduce cutting pressure. Ensure blade is not binding in material. |
9. Specifications
| Brand | RIDGID |
| Model Number | R8647B |
| Power Source | 18V Battery (not included) |
| Motor Type | Brushless |
| Item Weight | 7.5 pounds |
| Color | Orange and Black |
| UPC | 648846078298 |
10. Warranty and Support
For detailed warranty information, please refer to the official RIDGID warranty statement included with your product purchase or visit the official RIDGID website. Warranty terms may vary based on region and retailer.
If you require technical assistance, replacement parts, or have questions regarding your RIDGID 18V BRUSHLESS Cordless Reciprocating Saw, please contact RIDGID customer support:
- RIDGID Customer Service: Refer to your product packaging or the official RIDGID website for the most current contact information.
- Online Resources: Visit www.ridgid.com for product registration, FAQs, and additional support materials.







