DeWalt XR DCMWP134 Lawn Mower Manual

The DeWalt XR DCMWP134 is a 20-inch cordless electric lawn mower powered by a 20V MAX* or FLEXVOLT ADVANTAGE* battery system. It features a brushless motor for extended runtime, a 3-in-1 capability (mulch, bag, side discharge), a single-lever height adjustment for 7 cutting positions (1.5-4 inches), a folding handle for compact storage, and a push-button start. 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, battery port, height adjustment lever, safety key, and push-button start.

Assembly & Setup

Unpack all parts. Assembly requires basic tools (included).

1. Attach the Lower Handle: Bolt lower handle sections to deck using provided hardware.
2. Attach the Upper Handle: Connect upper handle to lower handle; secure knobs.
3. Install Grass Bag: Hook bag onto rear deck brackets.
4. Install Battery: Insert compatible 20V MAX or FLEXVOLT ADVANTAGE battery into port.
5. Adjust Cutting Height: Set lever to desired position (test on a small area first).

WARNING! Ensure mower is off and battery removed during assembly. Tighten all fasteners securely.

First-Time Operation

Before first mow, inspect area for debris. Charge battery fully.

1. Insert Safety Key: Place key into slot near handle.
2. Insert Battery: Push battery into port until it clicks.
3. Select Mode: Install mulch plug, bag, or attach side discharge chute as needed.
4. Start Mower: Press and hold safety lever on handle, then press start button.
5. Mow: Walk at steady pace, overlapping passes slightly.
6. Shut Down: Release safety lever; remove battery and safety key for storage.

CAUTION! Always wear eye protection and sturdy footwear. Do not mow wet grass.

Specifications

• Model: DCMWP134
• Cutting Width: 20 inches
• Cutting Height Range: 1.5 - 4 inches (7 positions)
• Deck Material: Steel
• Power System: 20V MAX* / FLEXVOLT ADVANTAGE* Brushless Motor
• Battery Compatibility: DeWalt 20V MAX & FLEXVOLT ADVANTAGE Batteries
• Charger: DeWalt 20V MAX Charger (sold separately)
• Weight (without battery): Approx. 55 lbs
• Collection Bag Capacity: 1.9 bushels
• Warranty: 3-year limited warranty

Controls and Settings

Main controls located on upper handle.

Handle Controls: Safety Lever (must be held to operate), Start Button, Battery Fuel Gauge (on compatible batteries).

Deck Controls: Single-Lever Height Adjustment (lift lever to move, set wheel positions evenly), Discharge Chute Lever (for side discharge mode).

Settings: Cutting Height (lever positions 1-7), Operation Mode (mulch plug installed, bag attached, or side discharge chute attached).

Cutting & Operation Modes

3-in-1 functionality: Mulching, Bagging, Side Discharge.

1. Mulching: Install mulch plug (closes rear and side openings). Cuttings are recut and returned to lawn as fertilizer.
2. Bagging: Attach grass bag to rear brackets. Collects clippings for disposal.
3. Side Discharge: Attach discharge chute to side opening. Ejects clippings to the side (for very tall grass).

Tip: For best mulching, mow frequently and avoid cutting more than 1/3 of grass height at once.

Battery & Charging

Compatible with DeWalt 20V MAX and FLEXVOLT ADVANTAGE battery packs.

1. Charging: Use only DeWalt 20V MAX chargers. Insert battery into charger; LED indicates status.
2. Runtime: Varies by battery capacity (Ah rating), grass condition, and height.
3. Storage: Store battery in cool, dry place. Charge fully before long storage.
4. Battery Fuel Gauge: Press button on battery to check charge level (if equipped).

WARNING! Use only DeWalt batteries and chargers. Do not expose battery to fire or water.

Maintenance & Cleaning

Regular maintenance ensures optimal performance and longevity.

1. After Each Use: Remove battery and safety key. Clean underside of deck with brush or hose (ensure mower is off and unpowered).
2. Blade Care: Periodically inspect blade for damage or dullness. Sharpen or replace as needed (disconnect battery first).
3. Wheel & Height Adjustment: Check for smooth operation; lubricate pivot points if necessary.
4. Storage: Store in a dry place. Fold handle for compact storage.

CAUTION! Always disconnect battery before performing any maintenance. Ensure blade has stopped completely.

Safety Information

Read all instructions before use. Contains important safety warnings.

• Always wear eye protection and substantial footwear.
• Clear mowing area of stones, sticks, wires, and other objects.
• Do not operate mower in wet grass or rain.
• Do not allow children or untrained persons to operate.
• Never carry the mower while it is running.
• Use the safety key to prevent unauthorized use.
• Be aware of the discharge direction and keep bystanders clear.

Warranty & Support

DeWalt XR DCMWP134 is backed by a 3-year limited warranty, 1-year free service, and a 90-day money-back guarantee. For warranty service, locate your nearest DeWalt Service Center or contact customer support. For technical support, parts, or manuals, visit www.dewalt.com or call 1-800-4-DeWalt (1-800-433-9258).

Troubleshooting

Reset: For electrical issues, remove battery for 60 seconds, then reinsert.

Service: 1-800-4-DeWalt; www.dewalt.com