DeWalt 12A-01C2039 Lawn Mower Manual

The DeWalt 12A-01C2039 is a 20-inch cordless electric lawn mower featuring a brushless motor, dual 12Ah 60V MAX FLEXVOLT batteries, variable speed control, 7-position height adjustment, LED headlight, weather-resistant construction, and a mulching/bagging side-discharge system. Below are key sections for safety, features, assembly, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: 20-inch steel deck, brushless motor, battery compartment, height adjustment lever, safety key, handle with controls, LED headlight, rear bagger attachment.

Assembly Instructions

Unpack and inspect all contents. Assembly requires basic tools (included).

1. Attach Lower Handle: Secure lower handle to deck using provided bolts and wrench.
2. Install Upper Handle: Connect upper handle to lower handle, tighten knobs.
3. Attach Grass Bag: Slide bagger frame onto rear deck hooks, secure with pins.
4. Install Battery: Insert batteries into compartment until they click.
5. Attach Safety Key: Insert safety key into control panel.

WARNING! Do not install batteries until assembly is complete. Ensure all bolts are tightened securely.

First-Time Setup

Before first use, complete these steps.

1. Charge Batteries: Fully charge both batteries using DeWalt charger (approx. 60 minutes).
2. Adjust Cutting Height: Set height lever to desired position (middle setting recommended).
3. Test Safety Features: Verify safety key removal stops motor immediately.
4. Select Discharge Mode: Install mulching plug, bagger, or set for side discharge.
5. Perform Test Run: In clear area, engage motor to ensure proper operation.

CAUTION! Keep hands and feet away from cutting blade during testing.

Specifications

• Cutting Width: 20 inches.
• Motor Type: Brushless electric.
• Battery System: Dual 12Ah 60V MAX FLEXVOLT.
• Cutting Height Range: 1.5" to 4" (7 positions).
• Deck Material: Powder-coated steel.
• Weight: 65 lbs (without batteries).
• Bag Capacity: 2.5 bushels.
• Charger: 60V MAX fast charger included.
• Warranty: 3-year limited warranty.

Controls and Settings

Handle Controls: Safety key slot, start/stop trigger, battery fuel gauge, speed control dial.

Operation: Insert safety key, squeeze trigger to start motor, release to stop. Adjust speed with dial.

Height Adjustment: Lever on each wheel for individual height settings. Discharge Options: Mulching plug (included), rear bag attachment, side discharge chute. Battery Management: Fuel gauge shows charge level; automatic shutoff when batteries are depleted.

Battery Installation & Charging

Batteries install in rear compartment. Charger connects to standard 120V outlet.

1. Installation: Insert battery until click is heard; press release button to remove.
2. Charging: Connect charger to battery; LED indicates charging status (red=charging, green=complete).
3. Storage: Store batteries at room temperature; charge every 30 days if not in use.
4. Battery Care: Avoid extreme temperatures; do not puncture or modify batteries.

Tip: Use both batteries alternately for balanced wear and extended lifespan.

Mowing Operation

For optimal cutting performance and safety.

1. Pre-Mow Inspection: Clear area of debris, check blade condition, ensure bagger is secure.
2. Starting: Insert safety key, squeeze trigger to start motor.
3. Mowing Pattern: Overlap each pass by 2-3 inches for even cutting.
4. Slope Operation: Mow across slopes, not up and down (max 15° incline).
5. Wet Grass: Reduce speed and cutting height slightly for better performance.
6. Bagging: Empty bag when ¾ full to maintain airflow.
7. Mulching: Ensure mulching plug is installed; mow at consistent speed.
8. Completion: Release trigger, remove safety key, clean deck, store properly.

WARNING! Always remove safety key when not in use. Keep bystanders away during operation.

Safety Features

Safety Key: Required for operation; prevents unauthorized use. Blade Brake: Stops blade within 3 seconds of trigger release. Tip-Over Protection: Automatic shutoff if mower tips beyond 45°. Overload Protection: Motor shuts off if overloaded; wait 30 seconds to restart.

Maintenance & Storage

Regular maintenance ensures optimal performance and longevity.

1. After Each Use: Clean underside of deck, check for damage.
2. Weekly: Inspect blade sharpness and balance; tighten loose fasteners.
3. Monthly: Check wheel bearings; lubricate height adjustment mechanism.
4. Seasonal: Sharpen or replace blade; inspect electrical connections.
5. Storage: Clean thoroughly, remove batteries, store in dry location.

CAUTION! Disconnect batteries before performing any maintenance. Wear gloves when handling blade.

Regulatory Information

UL Certified: Meets UL 60335-2-77 standards for electric lawn mowers. EPA Compliant: Zero emissions operation. Copyright © 2023 DeWalt; trademarks of Stanley Black & Decker, Inc. Battery Disposal: Recycle batteries according to local regulations. For support, visit www.dewalt.com or contact 1-800-4-DeWalt (1-800-433-9258).

Troubleshooting

Reset: Remove batteries for 5 minutes to reset electronics.

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