Dewalt DC390 Circular Saw Manual

The Dewalt DC390 is a powerful cordless circular saw designed for professional use. It features a 6-1/2 inch carbide-tipped blade, a high-performance motor, and a lightweight design for ease of use. This manual provides essential information on safety, features, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Safety Information 3. Operation Instructions 4. Specifications 5. Maintenance 6. Troubleshooting

Features at a Glance

The Dewalt DC390 circular saw is equipped with several features that enhance its performance and usability:

6-1/2 inch carbide-tipped blade for smooth cutting.
High-performance motor delivers 5,800 RPM for fast cutting.
Lightweight design for easy handling and maneuverability.
Integrated electric brake for added safety.
Bevel capacity of 0-50 degrees for versatile cutting angles.

Safety Information

Always follow safety guidelines when operating the circular saw:

Wear appropriate personal protective equipment (PPE).
Ensure the work area is clear of obstructions.
Keep hands away from the cutting area.
Do not operate the saw in wet or damp conditions.
Disconnect the battery when changing blades or making adjustments.

Operation Instructions

To operate the Dewalt DC390 circular saw:

Ensure the battery is fully charged and properly installed.
Adjust the cutting depth and bevel angle as needed.
Hold the saw firmly with both hands and align the blade with the cutting line.
Press the trigger to start the saw and make the cut.
Release the trigger to stop the saw after completing the cut.

Specifications

Blade Diameter: 6-1/2 inches.
Motor Speed: 5,800 RPM.
Bevel Capacity: 0-50 degrees.
Weight: 7.5 lbs.
Battery Type: 18V Lithium-Ion.
Cutting Depth at 90°: 2-1/4 inches.
Cutting Depth at 45°: 1-5/8 inches.

Maintenance

Regular maintenance is essential for optimal performance:

Keep the saw clean and free of debris.
Inspect the blade regularly for wear and replace as necessary.
Check the battery contacts for corrosion and clean if needed.
Store the saw in a dry place when not in use.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Saw does not start	Battery not charged	Charge the battery and try again.
Blade binds during cut	Improper blade installation	Check blade alignment and reinstall if necessary.
Excessive vibration	Worn blade	Replace the blade with a new one.
Inconsistent cutting depth	Depth adjustment not secure	Check and tighten the depth adjustment.

Service: For further assistance, contact Dewalt customer service.