DeWalt DCMW564 Lawn Mower Manual

The DeWalt DCMW564 is a high-performance 20-inch cordless electric lawn mower powered by two 20V MAX* or 60V MAX FLEXVOLT® batteries (sold separately). It features a brushless motor for increased runtime and durability, a 3-in-1 capability (mulch, bag, or side discharge), a single-lever height adjustment for 7 cutting positions (1.5" to 4"), a folding handle for easy storage, and a weather-resistant construction. Below are key sections for safety, features, assembly, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: Deck with brushless motor, folding handle assembly, rear grass bag, mulch plug, battery ports, safety key, and single-lever height adjuster.

Assembly & Setup

Unpack all parts. Assembly requires attaching the handle and installing the grass bag.

1. Attach Lower Handle: Align lower handle sections with deck brackets. Secure with provided bolts and wrench.
2. Attach Upper Handle: Slide upper handle onto lower handle posts. Secure with knobs or bolts.
3. Install Grass Bag: Hook bag frame onto rear deck mounts. Ensure it clicks into place.
4. Install Mulch Plug (if mulching): Insert mulch plug into rear discharge opening.
5. Install Batteries: Insert two charged 20V MAX* or 60V MAX FLEXVOLT® batteries into the ports.

WARNING! Do not install batteries until assembly is complete. Ensure all fasteners are tight.

Safety Instructions

Read all instructions before use. Always wear appropriate safety gear.

1. Clear Mowing Area: Remove stones, toys, wire, and other objects that could be thrown.
2. Inspect Mower: Check for damage, loose parts, and the condition of the blade before each use.
3. Use Safety Key: Remove key when not in use, during maintenance, or when leaving mower unattended.
4. Keep Hands & Feet Clear: Never place hands or feet near rotating parts or under the deck.
5. Use in Dry Conditions: Do not operate in wet grass or rain to avoid electric shock hazard.
6. Keep Bystanders Away: Especially children and pets.

DANGER! Risk of severe injury from rotating blade. Always disconnect batteries before any maintenance.

Specifications

• Model: DCMW564
• Cutting Width: 20 inches
• Cutting Height Range: 1.5" - 4" (7 positions)
• Deck Material: Steel
• Power System: Cordless Electric (Brushless Motor)
• Battery Compatibility: (2) DeWalt 20V MAX* or 60V MAX FLEXVOLT®
• Collection Bag Capacity: 1.9 bushels (approx.)
• Wheels: 8" rear, 7" front
• Weight (without battery): 56 lbs (approx.)
• Warranty: 3-year limited warranty, 1-year free service.

Controls and Operation

Handle Controls: START/STOP button, Safety Key slot, Bail Lever (deadman switch).

Starting:

1. Insert Safety Key.
2. Ensure batteries are installed and charged.
3. Press and hold the Bail Lever against the handle.
4. Press the START button. The blade will engage.

Stopping: Release the Bail Lever. The blade will stop within seconds.

Transport: Always turn mower off and remove the safety key before moving across surfaces or slopes.

Cutting Height Adjustment

Use the single lever located near each wheel to adjust all four wheels simultaneously.

1. Pull the lever outward to disengage from the height setting.
2. Move the lever to the desired numbered position (1=lowest, 7=highest).
3. Release the lever to lock into place.
4. Check that all wheels are at the same height.

Tip: For a healthier lawn, never cut more than 1/3 of the grass blade length at one time.

3-in-1 Functionality

Configure the mower for your preferred grass disposal method.

• Mulching: Install the mulch plug fully into the rear discharge chute. Cuttings are recut and returned to the lawn as fertilizer.
• Bagging: Attach the grass bag to the rear mounts. Ensure the mulch plug is removed.
• Side Discharge: Remove both the grass bag and the mulch plug. Grass is discharged from the side chute (deflector must be installed).

WARNING! Always stop the mower and remove the safety key before changing the discharge mode.

Battery Installation & Care

Use only genuine DeWalt 20V MAX* or 60V MAX FLEXVOLT® batteries.

1. Installation: Slide batteries into the ports until they click. Ensure they are fully seated.
2. Charging: Use only DeWalt chargers. Charge batteries at room temperature.
3. Storage: Store batteries in a cool, dry place away from metal objects.
4. Runtime: Varies based on grass condition, height, and battery type. For best results, use two fully charged high-capacity batteries.

CAUTION! Do not incinerate or short-circuit batteries. Do not use damaged batteries.

Maintenance & Cleaning

Disconnect batteries and remove safety key before any maintenance.

1. Blade Inspection: Regularly check for nicks, bends, or dullness. A sharp blade ensures a clean cut and healthy lawn.
2. Blade Replacement: Use a block to prevent blade from turning. Remove the mounting bolt, replace blade, and torque to specification (see manual).
3. Cleaning the Deck: After use, tip mower on its side (with air filter side up for models with engine). Scrape off grass clippings with a brush or plastic scraper.
4. Wheel & Bearing Check: Ensure wheels turn freely and are not damaged.

Storage

Proper storage extends the life of your mower.

1. Clean the mower thoroughly as described above.
2. Fold the handle: Loosen knobs, fold handle down toward the deck.
3. Battery Storage: Remove batteries. Store separately in a cool, dry place at approx. 50% charge if storing long-term.
4. Location: Store indoors in a dry, locked location out of reach of children.

CAUTION! Never store the mower with batteries installed in extreme temperatures (below 40°F or above 105°F).

Troubleshooting

Service: For repairs, contact an authorized DeWalt service center or call 1-800-4-DeWalt (1-800-433-9258).