Dewalt DWE4120 Manual

The Dewalt DWE4120 is a powerful 4-1/2 inch angle grinder designed for heavy-duty applications. It features a 10-amp motor that delivers 12,000 RPM for fast and efficient grinding, cutting, and polishing. The grinder is equipped with a durable metal gear case for increased durability and a two-position side handle for added control. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Devices 7. Operating Instructions 8. Maintenance 9. Regulatory Information 10. Troubleshooting

Features at a Glance

Key components: 10-amp motor, 12,000 RPM, metal gear case, two-position side handle, and safety guard.

Feature	Description
10-amp motor	Provides high power for demanding applications
12,000 RPM	Fast grinding and cutting performance
Metal gear case	Increases durability and longevity
Two-position side handle	Offers added control and comfort
Safety guard	Protects user from debris and sparks

Installation

Unpack and inspect contents. Ensure all components are included.

Attach the handle: Secure the side handle to the desired position.
Install the grinding wheel: Follow the instructions to attach the wheel securely.
Plug into AC power: Ensure the power source is compatible.

WARNING! Always wear appropriate safety gear when operating the grinder.

First-Time Setup

Power on the grinder; ensure all safety features are engaged.

Check the wheel: Ensure the grinding wheel is properly installed.
Adjust the guard: Position the safety guard to protect against debris.
Test operation: Briefly power on to ensure functionality.

CAUTION! Ensure stable footing and proper grip during operation.

Specifications

Motor Power: 10 amps.
Speed: 12,000 RPM.
Wheel Size: 4-1/2 inches.
Weight: 5.5 lbs.
Dimensions: 12 x 5 x 4 inches.
Power Source: 120V AC.
Warranty: 3 years limited warranty.

Controls and Settings

Access controls via the main power switch and speed settings. The side handle can be adjusted for left or right-handed use.

Safety Features: Includes a safety lock-off switch to prevent accidental start-up.

Connecting Devices

Ensure the grinder is unplugged before connecting any accessories.

Attach the grinding wheel: Follow the manufacturer's instructions.
Connect to power: Ensure the outlet is suitable for the grinder's voltage.

Tip: Always check for wear on the grinding wheel before use.

Operating Instructions

To operate the grinder, follow these steps:

Power on the grinder using the main switch.
Hold the grinder firmly with both hands.
Guide the grinder along the material to be cut or ground.

WARNING! Keep hands away from the grinding wheel during operation.

Maintenance

Regular maintenance is essential for optimal performance.

Clean the grinder after each use.
Inspect the grinding wheel for damage.
Store in a dry place when not in use.

Regulatory Information

This product complies with applicable safety standards and regulations. For more information, visit the Dewalt website or contact customer service.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Grinder won't start	Power supply issue	Check power cord and outlet.
Excessive vibration	Worn grinding wheel	Replace the grinding wheel.
Overheating	Blocked air vents	Clean air vents and allow to cool.
Noise during operation	Loose components	Inspect and tighten all screws.

Service: For further assistance, contact Dewalt customer service.