DeWalt DCMWSP660N Lawn Mower Manual

The DeWalt DCMWSP660N is a 60V MAX cordless self-propelled lawn mower featuring a 21-inch steel deck, brushless motor, 7.5Ah battery with fuel gauge, 6-position single-lever height adjustment (1.5-4 inches), 3-in-1 mulching/bagging/side discharge capability, foldable handle for storage, LED headlight, and push-button start. Below are key sections for safety, features, assembly, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Assembly & Setup 3. First-Time Operation 4. Specifications 5. Controls and Settings 6. Cutting & Discharge Options 7. Battery & Charging 8. Maintenance & Storage 9. Safety Information 10. Warranty & Support 11. Troubleshooting

Features at a Glance

Key components: 21-inch steel cutting deck, Brushless motor, 60V MAX 7.5Ah battery, Single-lever height adjustment, 3-in-1 function, Foldable handle, LED headlight, Self-propelled drive system.

Feature	Description
Cutting Width	21-inch steel deck for efficient mowing
Power System	60V MAX brushless motor (cordless)
Battery	7.5Ah with fuel gauge indicator
Height Adjustment	Single-lever, 6 positions (1.5" to 4")
3-in-1 Function	Mulch, Bag, or Side Discharge
Drive System	Self-propelled with variable speed control
Handle	Foldable for compact storage
Headlight	LED for low-light conditions
Start Method	Push-button electric start
Wheels	8-inch rear, 7-inch front

Assembly & Setup

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

Attach handle: Align handle tubes with lower brackets, secure with provided bolts and wrenches.
Install grass bag: Attach bag holder to rear deck, hook bag onto holder.
Install battery: Insert 60V MAX battery into compartment until it clicks.
Adjust cutting height: Set lever to desired position (test on flat surface).

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

First-Time Operation

Fully charge battery before first use. Perform safety check.

Insert battery: Ensure it's fully seated and locked.
Select function: Set to mulch, bag, or side discharge as needed.
Adjust height: Use single lever to set cutting height.
Start mower: Press and hold safety key, then press start button.
Engage drive: Squeeze drive control lever to activate self-propelled motion.

CAUTION! Clear mowing area of debris. Wear appropriate safety gear: eye protection, sturdy shoes, long pants.

Specifications

Model: DCMWSP660N
Cutting Width: 21 inches
Deck Material: Steel
Motor Type: Brushless
Voltage: 60V MAX
Battery: 7.5Ah Lithium-ion
Cutting Height: 1.5 - 4 inches (6 positions)
Drive: Self-propelled, variable speed
Functions: Mulch, Bag, Side Discharge
Weight (without battery): 65 lbs
Warranty: 3-year limited

Controls and Settings

Main controls located on handle. Safety key must be inserted for operation.

Handle Controls: Start/Stop button, Drive control lever, Height adjustment lever, Battery fuel gauge, LED headlight switch.

Cutting Height: Adjust via single lever (positions marked 1-6). Drive Speed: Variable based on lever pressure. Battery: Check fuel gauge (LED indicators). Headlight: Toggle switch for low-light mowing. Safety: Key removal disables mower.

Cutting & Discharge Options

Configure for mulching, bagging, or side discharge.

Mulching: Install mulch plug (included). Cuts clippings finely back into lawn.
Bagging: Attach grass bag. Collects clippings for disposal.
Side Discharge: Remove mulch plug and bag. Ejects clippings to side.

Tip: For best mulching, mow when grass is dry and not too tall. Empty bag frequently to maintain airflow.

Battery & Charging

60V MAX 7.5Ah Lithium-ion battery with fuel gauge.

Charging: Use DeWalt 60V MAX charger. Insert battery, charger LED indicates status (red=charging, green=complete).
Runtime: Approximately 60 minutes per charge (varies with grass conditions).
Storage: Store battery in cool, dry place. Charge fully before long storage.
Fuel Gauge: Press button on battery to check charge level (4 LEDs).

WARNING! Use only DeWalt 60V MAX chargers. Do not expose battery to fire or water. Do not disassemble.

Maintenance & Storage

Regular maintenance ensures optimal performance and longevity.

After each use: Clean underside of deck (remove battery first).
Blade care: Check blade monthly for damage/dullness. Sharpen or replace as needed.
Wheels: Check for debris, ensure free rotation.
Storage: Fold handle, store in dry location. Remove battery if storing >30 days.

CAUTION! Always disconnect battery before performing any maintenance. Wear gloves when handling blade.

Safety Information

Read all instructions before operation. Keep bystanders away.

Wear eye protection, sturdy footwear, long pants.
Clear mowing area of stones, sticks, wire.
Do not mow wet grass.
Do not operate on slopes >15 degrees.
Never leave mower unattended with battery inserted.
Keep hands and feet away from moving parts.
Disconnect battery before troubleshooting or maintenance.

Warranty & Support

DeWalt 3-year limited warranty. Register product online for warranty validation.

For support, visit www.dewalt.com or contact DeWalt Customer Service at 1-800-433-9258. Have model number (DCMWSP660N) and date of purchase ready.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Mower won't start	Battery not inserted, Safety key missing	Insert battery fully, ensure safety key is installed.
Poor cutting performance	Dull blade, Wet grass, Low battery	Sharpen/replace blade, Mow when dry, Charge battery.
Self-propelled not working	Drive lever not engaged, Debris in wheels	Squeeze drive lever fully, Clear wheel area.
Battery not charging	Faulty charger, Temperature extreme	Try different outlet/charger, Move to 40-105°F area.
Excessive vibration	Damaged/unbalanced blade, Loose parts	Inspect/replace blade, Tighten all fasteners.

Reset: Remove battery for 30 seconds, then reinsert.

Service: Authorized DeWalt service centers only. Do not attempt internal repairs.