1. Important Safety Instructions
Always observe basic safety precautions to reduce the risk of fire, electric shock, and personal injury when operating power tools. Read and understand all instructions before using this saw.
- Wear Eye Protection: Always wear safety goggles or safety glasses with side shields.
- Wear Hearing Protection: Use earplugs or earmuffs during operation.
- Wear Appropriate Clothing: Avoid loose clothing, jewelry, or long hair that can get caught in moving parts.
- Secure Workpiece: Always clamp the material firmly before cutting. Never hold the workpiece by hand.
- Keep Hands Clear: Maintain a safe distance from the blade and cutting area.
- Disconnect Power: Unplug the saw from the power source before making any adjustments, changing accessories, or performing maintenance.
- Use Correct Blade: Only use 14-inch carbide-tipped blades specifically designed for metal cutting with this saw.
- Maintain Good Footing and Balance: Do not overreach.
- Avoid Accidental Starting: Ensure the switch is in the off position before plugging in the tool.
2. Package Contents
Verify that all items are present upon unpacking your DEWALT DW872 Multi-Cutter Saw:
- DEWALT DW872 14-inch Heavy-Duty Multi-Cutter Saw
- 14-inch Carbide-Tipped Metal Cutting Blade (pre-installed or separate)
- Blade Wrench (for installation/removal)
- Operator's Manual
3. Specifications
Technical data for the DEWALT DW872 14-inch Multi-Cutter Saw:
| Feature | Specification |
|---|---|
| Brand | DEWALT |
| Model Number | DW872 |
| Blade Material | Carbide |
| Surface Recommendation | Metal |
| Power Source | Corded Electric |
| Special Feature | Spindle Lock |
| Product Dimensions (L x W x H) | 24" x 18.5" x 15.25" |
| Voltage | 120 Volts |
| Item Weight | 55 Pounds |
| Speed (No Load) | 1300 RPM |
| Blade Length / Diameter | 14 Inches |
| Number of Teeth | 70 |
| Cutting Angle | Up to 45 Degrees |
| Wattage | 1800 watts |
| Handle Material | Metal |
4. Setup
4.1 Unpacking and Inspection
Carefully remove the saw and all components from the packaging. Inspect for any damage that may have occurred during shipping. Do not operate the saw if any parts are damaged or missing.
4.2 Blade Installation/Replacement
Ensure the saw is unplugged before attempting to install or replace the blade.
- Locate the spindle lock button and press it to secure the blade spindle.
- Use the provided blade wrench to loosen the arbor nut by turning it counter-clockwise.
- Remove the outer flange and the old blade.
- Clean any debris from the flanges and arbor.
- Place the new 14-inch carbide-tipped metal cutting blade onto the arbor, ensuring the rotation arrow on the blade matches the arrow on the saw's guard.
- Replace the outer flange and arbor nut. Tighten the arbor nut securely with the blade wrench while holding the spindle lock button. Do not overtighten.
4.3 Adjusting the Vise and Fence
The saw features an adjustable quick-fence and quick-lock vise for securing various material sizes and making angle cuts.
- Quick-Lock Vise: To clamp material, rotate the vise handle clockwise until the material is firmly secured against the fence. Ensure the material is stable and will not shift during cutting.
- Adjustable Quick-Fence: The fence can be adjusted for different cutting angles, up to 45 degrees. Loosen the fence adjustment bolts, slide the fence to the desired angle, and retighten the bolts securely. Always verify the angle with a protractor or square before cutting.
5. Operating Instructions
Follow these steps for safe and effective operation of your multi-cutter saw.
5.1 Material Clamping
Proper clamping is critical for safety and cut quality. Use the quick-lock vise to firmly secure the workpiece. For longer pieces, additional support stands may be necessary to prevent tipping or movement.
5.2 Making a Cut
- Ensure the workpiece is securely clamped and the blade is clear of any obstructions.
- Lower the blade slowly until it just touches the workpiece, aligning the cut line.
- Depress the trigger switch to start the motor, allowing the blade to reach full speed (1300 RPM) before beginning the cut.
- Apply steady, moderate downward pressure to feed the blade through the material. Do not force the saw; allow the blade to cut at its own pace. Excessive pressure can lead to premature blade wear, overheating, and poor cut quality.
- Once the cut is complete, release the trigger switch and allow the blade to stop rotating before raising the saw arm.
- Wait for the workpiece to cool before handling, as cut edges can be hot.
6. Maintenance
Regular maintenance ensures optimal performance and extends the life of your saw. Always unplug the tool before performing any maintenance.
6.1 Cleaning
- Periodically clean the saw's exterior with a soft, damp cloth. Do not use harsh chemicals or abrasive cleaners.
- Remove metal chips and dust from the base, vise, and blade guard using a brush or compressed air. Ensure ventilation openings are clear.
6.2 Blade Inspection and Replacement
- Inspect the blade regularly for dullness, chipped teeth, or cracks. A dull or damaged blade can cause poor cuts, overheating, and increased kickback risk.
- Replace worn or damaged blades promptly following the instructions in Section 4.2.
6.3 Motor Brush Inspection
The motor brushes may require periodic inspection and replacement. Refer to the detailed service manual or contact DEWALT service for brush maintenance procedures.
7. Troubleshooting
This section addresses common issues you might encounter with your DEWALT DW872 Multi-Cutter Saw.
| Problem | Possible Cause | Solution |
|---|---|---|
| Saw does not start | No power supply; Faulty switch; Worn motor brushes | Check power cord and outlet; Test switch; Inspect/replace brushes (contact service) |
| Poor cut quality or excessive vibration | Dull or damaged blade; Improperly clamped workpiece; Incorrect cutting technique | Replace blade; Secure workpiece firmly; Apply steady, moderate pressure |
| Excessive sparks or overheating | Dull blade; Forcing the cut; Incorrect blade for material | Replace blade; Reduce feed pressure; Ensure blade is suitable for metal cutting |
| Blade wears quickly | Forcing the cut; Incorrect blade for material; Improper clamping leading to blade deflection | Reduce feed pressure; Use appropriate carbide-tipped blade; Ensure workpiece is securely clamped |
8. Warranty and Support
This DEWALT DW872 Multi-Cutter Saw is covered by a manufacturer's warranty. For specific warranty terms and conditions, please refer to the warranty card included with your product or visit the official DEWALT website.
For technical assistance, service, or to locate an authorized service center, please contact DEWALT Customer Support:
- Online Support: Visit the official DEWALT website (DEWALT Store on Amazon)
- Telephone Support: Refer to your product documentation for regional contact numbers.
