The DeWalt DW12A-AVP2R3739 is a 12 Amp, 21-inch corded electric lawn mower featuring a high-efficiency brushless motor, 2-in-1 mulching and bagging capability, 7-position single-lever height adjustment, foldable handle for easy storage, and a durable steel deck. Designed for residential use with a 120V AC power source. Below are key sections for safety, features, assembly, operation, maintenance, and troubleshooting.
Key components: 21-inch steel cutting deck, 12 Amp brushless motor, 2-in-1 mulch/bag system, foldable handle, grass collection bag, power cord with GFCI, and single-lever height adjustment.
| Feature | Description |
|---|---|
| Motor | 12 Amp high-efficiency brushless motor |
| Cutting Width | 21 inches |
| Cutting System | 2-in-1 (Mulch & Bag) |
| Height Adjustment | 7-position single lever (1.5" to 4") |
| Deck Material | Durable powder-coated steel |
| Handle | 3-position foldable for storage |
| Power Source | 120V AC, corded electric |
| Safety Key | Removable key for operator presence control |
| Grass Bag Capacity | 1.9 bushels (55 liters) |
| Warranty | 3-year limited warranty |
Unpack all parts and inspect for damage. Assembly requires a Phillips screwdriver and adjustable wrench.
WARNING! Ensure all fasteners are tight before operation. Do not plug in power cord during assembly.
Read all instructions before use. Always wear appropriate safety gear.
DANGER! Risk of electric shock. Do not expose to rain or use on wet grass.
Handle Controls: Safety key slot, start lever (deadman switch), height adjustment lever.
Starting Procedure:
Operating Tips: Mow in overlapping passes. Change mowing pattern weekly. Avoid cutting more than 1/3 of grass height at once.
Use single lever to adjust all four wheels simultaneously.
Recommended Heights: 2.5-3 inches for most grasses; higher in summer heat.
Mulching Setup: Install mulching plug in rear discharge chute. Mower will cut clippings finely and return them to lawn.
Bagging Setup: Remove mulching plug. Attach grass bag to rear brackets.
Emptying Bag: Stop mower. Unhook bag by lifting handles. Empty clippings into compost or disposal.
Tip: For best mulching, mow when grass is dry and keep blade sharp.
After Each Use: Unplug. Clean underside of deck with brush or hose (after unplugging). Empty grass bag.
Blade Care: Check blade monthly for sharpness and damage. Replace if bent or dull. Always disconnect power before blade service.
Winter Storage: Clean thoroughly. Apply light oil to metal parts. Store in dry place, handle folded.
CAUTION! Never clean with mower plugged in. Wear gloves when handling blade.
DeWalt warrants this product against defects in material and workmanship for 3 years from date of purchase. Proof of purchase required. This warranty does not cover normal wear, misuse, or commercial use. For warranty service, contact DeWalt Customer Service at 1-800-433-9258 or visit www.dewalt.com.
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| Mower won't start | Safety key not inserted; no power | Insert safety key; check outlet/cord; reset GFCI. |
| Poor cutting performance | Dull blade; low cutting height | Sharpen or replace blade; adjust cutting height. |
| Mower vibrates excessively | Damaged or unbalanced blade | Stop use immediately; inspect and replace blade. |
| Grass not discharging | Wet grass; clogged deck | Mow when grass is dry; clean underside of deck. |
| Motor overheats | Clogged air vents; too long extension cord | Clean motor vents; use proper extension cord (14 AWG). |
| Wheels not turning smoothly | Debris in wheel axles | Clean axles; lubricate if necessary. |
Service: For repairs not covered under warranty, contact authorized DeWalt service center. Do not attempt to repair motor yourself.