The DeWalt DCMWSP255 is a 20-inch cordless electric lawn mower powered by two 20V MAX* or 60V MAX FLEXVOLT* batteries (sold separately). It features a brushless motor for extended runtime, a 3-in-1 mulching, bagging, and side-discharge system, a single-lever height adjustment (1.5" to 4"), a folding handle for storage, and a push-button start. Below are key sections for safety, features, assembly, operation, maintenance, and troubleshooting.
Key components: Deck with brushless motor, folding handle, battery ports, height adjustment lever, rear bag, mulch plug, safety key.
| Feature | Description |
|---|---|
| Power Source | Dual 20V MAX* or 60V MAX FLEXVOLT* Batteries (Sold Separately) |
| Cutting Width | 20 inches |
| Cutting Height | Single-lever adjustment, 6 positions (1.5" to 4") |
| Cutting Options | 3-in-1 (Mulch, Bag, Side Discharge) |
| Motor Type | Brushless |
| Start Type | Push-Button Electric Start |
| Handle | Folding for compact storage |
| Safety Key | Removable key to prevent accidental start |
| Battery Gauge | LED indicators on handle |
| Wheels | 8-inch rear, 7-inch front |
Unpack all parts and inspect for damage. Assembly requires basic tools (included).
WARNING! Ensure mower is off and batteries are removed during assembly. Keep hands clear of blade area.
Before first use, read all safety instructions. Ensure area is clear of debris.
CAUTION! Always wear eye and hearing protection. Do not mow wet grass.
Handle Controls: Safety bail handle, Start/Stop button, Battery gauge LEDs. Deck Controls: Single-lever height adjustment, Discharge chute selector.
Adjustments: Cutting Height: Move lever to one of 6 positions. Handle Height: Optional adjustment holes (not on all models). Bag Indicator: Visual window shows when bag is full.
Battery Gauge: 3 LEDs indicate charge level (Green=High, Yellow=Medium, Red=Low/Charge).
Use only DeWalt 20V MAX* or 60V MAX FLEXVOLT* batteries and charger.
Tip: For best performance, use two batteries of the same type and charge level.
Supports three cutting modes for versatility.
WARNING! Always stop mower and remove safety key before changing discharge mode. Keep hands and feet away from discharge opening.
Safety Bail Handle: Blade stops within 3 seconds of release. Removable Safety Key: Prevents unauthorized or accidental starting. Blade Brake System: Meets ANSI safety standards.
Disconnect batteries and remove safety key before any maintenance.
After Each Use: Clean underside of deck with brush or hose (ensure mower is off and unpowered). Wipe exterior with dry cloth. Check blade for damage or dullness.
Seasonal: Sharpen or replace blade as needed. Lubricate wheel axles if necessary. Store in a clean, dry place.
CAUTION! Never use water or cleaners on electrical components, battery ports, or controls.
This product complies with applicable ANSI/OPEI standards and U.S. CPSC regulations. Copyright © 2023 DeWalt. DeWalt, the yellow and black color scheme, and FLEXVOLT are trademarks of Stanley Black & Decker, Inc., used under license. For support, visit www.dewalt.com or contact 1-800-4-DeWalt (1-800-433-9258).
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| Mower won't start | Safety key not inserted, dead batteries, bail not engaged | Insert safety key, charge/replace batteries, fully engage bail handle. |
| Poor cutting performance | Dull blade, low battery, cutting height too low | Sharpen/replace blade, charge batteries, raise cutting height. |
| Mower stops during use | Batteries depleted, overload (grass too thick/wet) | Charge batteries, mow in slower passes, ensure grass is dry. |
| Uneven cut | Deck clogged, uneven tire pressure, worn blade | Clean deck, check tire pressure (if applicable), inspect/replace blade. |
| Bag not filling | Clogged chute, wet grass, mulch plug installed | Stop mower, clear chute, ensure grass is dry, remove mulch plug for bagging. |
Reset: Remove batteries and safety key for 1 minute to reset electronics.
Service: 1-800-4-DeWalt; www.dewalt.com