DeWalt DCMWSP650 Lawn Mower Manual

The DeWalt DCMWSP650 is a 20-inch cordless electric lawn mower featuring a brushless motor, two 10Ah MAX POWERSTACK batteries, variable speed control, single-lever height adjustment (1.5-4 inches), mulching and bagging capabilities, foldable handle for storage, LED headlight, and weather-resistant construction. Below are key sections for safety, features, assembly, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: Brushless motor deck, MAX POWERSTACK batteries, height adjustment lever, mulching plug, grass collection bag, foldable handle, safety key, LED headlight.

Assembly Instructions

Unpack and inspect all parts. Assemble on a flat, stable surface.

1. Attach the handle: Align handle brackets with deck mounts, secure with provided bolts and wrench.
2. Install the grass bag: Hook bag onto rear deck mounts, ensure secure attachment.
3. Insert batteries: Slide both POWERSTACK batteries into battery ports until they click.
4. Attach mulching plug (if desired): Insert plug into rear discharge chute.
5. Install safety key: Insert key into control panel slot.

WARNING! Ensure mower is powered off and batteries are removed during assembly. Use proper tools.

First-Time Setup

Prepare mower for initial use.

1. Charge batteries: Use DeWalt charger to fully charge both batteries before first use.
2. Adjust cutting height: Set lever to desired height (recommend 3 inches for first mow).
3. Inspect area: Clear lawn of debris, stones, and obstacles.
4. Insert safety key: Place key into slot to enable operation.
5. Test operation: Start mower in a clear area to ensure proper function.

CAUTION! Keep hands and feet away from cutting blade. Wear appropriate safety gear.

Specifications

• Cutting Width: 20 inches.
• Cutting Height Range: 1.5 - 4 inches.
• Motor Type: Brushless electric.
• Battery: Two 10Ah MAX POWERSTACK lithium-ion.
• Runtime: Up to 60 minutes per charge (varies with grass conditions).
• Charging Time: Approx. 60 minutes per battery with rapid charger.
• Collection Capacity: 2.5 bushels.
• Weight: 65 lbs (without batteries).
• Warranty: 3-year limited warranty.

Controls and Settings

Control Panel: POWER button, Variable Speed Dial, Battery Fuel Gauge, LED Headlight Switch.

Handle Controls: Start/Stop lever, Height Adjustment Lever, Fold Release Buttons.

Operation: Press and hold safety lever to handle, then press POWER button to start. Release lever to stop. Adjust speed with thumb dial (1-5). Use height lever to change cutting height. Toggle headlight with switch.

Operating the Mower

Follow proper mowing techniques for best results.

1. Insert safety key and batteries.
2. Adjust cutting height to desired level.
3. Hold safety lever to handle, press POWER button.
4. Mow in straight, overlapping passes.
5. Empty grass bag when full (indicator light will illuminate).
6. For mulching: Install mulching plug, mow at slower speed.
7. Use variable speed to match grass thickness.

Tip: Mow when grass is dry for best cutting performance and bagging.

Maintenance & Care

Regular maintenance ensures optimal performance.

1. After each use: Clean underside of deck, remove grass clippings.
2. Weekly: Check blade for damage or dullness, sharpen or replace as needed.
3. Monthly: Inspect wheels and axles for debris, lubricate if necessary.
4. Seasonally: Check all bolts and connections for tightness.
5. Storage: Clean thoroughly before long-term storage.

WARNING! Always remove batteries before performing any maintenance. Disconnect power source.

Battery Management

Proper battery care extends life and performance.

• Charge batteries fully before first use and after each mowing session.
• Store batteries in cool, dry place (40-80°F).
• Do not expose batteries to extreme temperatures or moisture.
• Use only DeWalt chargers designed for POWERSTACK batteries.
• Replace batteries if runtime decreases significantly or damage occurs.

CAUTION! Do not puncture or disassemble batteries. Dispose of properly according to local regulations.

Storage Guidelines

Prepare mower for off-season storage.

1. Clean mower thoroughly, especially underside.
2. Remove batteries and store separately in climate-controlled area.
3. Fold handle for compact storage.
4. Store in dry location, protected from elements.
5. Consider applying light oil to blade to prevent rust.

Tip: Charge batteries to 50% before long-term storage for optimal battery health.

Safety Information

Always follow safety guidelines to prevent injury.

• Read manual completely before operation.
• Wear safety glasses, long pants, and sturdy shoes.
• Keep children and pets away from mowing area.
• Never operate with damaged blade or components.
• Do not mow on steep slopes (greater than 15 degrees).
• Always remove safety key when not in use.
• Be aware of discharge chute direction.

DANGER! Never insert hands or feet near cutting blade, even when mower is off.

Troubleshooting

Reset: Remove batteries for 5 minutes, then reinsert to reset electronics.

Service: 1-800-4-DeWalt (1-800-433-9258); www.dewalt.com