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This greenworks 40v 21 self propelled lawn review focuses on a cordless mower designed for efficiency. It features a 21-inch cutting width and a 40V brushless motor. The system includes a 5.0 Ah battery for up to 45 minutes of runtime. Self-propulsion helps you tackle uneven terrain with rear-wheel drive. The durable steel deck supports three mowing functions. You get instant starts without gas or oil. This model fits users who want a quiet, maintenance-free tool. It integrates with over 75 other Greenworks 40V tools. The design prioritizes torque and longevity through its brushless technology.
- 40V brushless motor for high torque and quiet operation
- 21-inch steel deck with 7-position single-lever height adjustment
- Self-propelled rear-wheel drive for better traction on tough terrain
- 3-in-1 mowing functions including mulching, rear bagging, and side discharge
- Virtually maintenance-free with no gas, oil, or emissions required
Good fit for
This mower suits homeowners with small to medium lawns who prefer electric power. The 21-inch deck and 45-minute runtime handle typical backyard sizes efficiently. If you already own other Greenworks 40V tools, this mower expands your compatible toolkit. The self-propelled feature benefits users with slight slopes or uneven ground. You will appreciate the quiet operation and instant starts if you value convenience. The three-year warranty adds peace of mind for long-term ownership.
Who can skip it
Look elsewhere if you need extended runtime beyond 45 minutes. The battery capacity limits continuous use on larger properties. You might prefer a gas mower if you lack access to charging stations. The self-propelled mechanism may feel unnecessary for perfectly flat, small yards. If you require a wider cutting path, the 21-inch deck is standard. Users needing heavy-duty commercial performance should consider more robust industrial options. The cordless design restricts mobility to the battery charge duration.
Verdict
This mower offers a practical, quiet solution for standard residential lawns. Its brushless motor and self-propelled drive make mowing easier and more efficient.
Key specs explained for this mower
Voltage: 40V
This rating indicates the electrical power available to the motor. A 40V system typically offers more torque than lower-voltage tools, helping the mower cut through thick grass without stalling. When shopping, you compare this against 20V or 60V models to gauge raw power potential for your specific yard size and grass density.
Run Time: Up to 45 minutes
This figure tells you how long the mower operates on a single full charge. The actual duration varies based on grass thickness and your mowing speed. You should compare this runtime against your total lawn area to ensure you can finish the job without needing to recharge mid-task, which interrupts workflow.
Motor Type: Brushless
A brushless motor lacks carbon brushes, reducing friction and wear. This design delivers higher efficiency, quieter operation, and a longer lifespan compared to brushed alternatives. You benefit from less maintenance and consistent power output. When comparing models, brushless motors are the standard for modern, durable cordless lawn equipment.
Cutting Width: 21"
This measurement defines the width of the grass strip cut in one pass. A 21-inch deck balances maneuverability with coverage speed. You will finish larger yards faster than with narrower 14-inch mowers, while still fitting through standard gate widths. Compare this width to your yard layout to optimize your mowing pattern.
Battery Capacity: 5.0 Ah
Amp-hour capacity measures the energy stored in the battery. A 5.0 Ah cell holds more charge than smaller options, supporting longer run times. You can use this battery across 75+ compatible Greenworks tools, expanding your toolkit. When shopping, higher Ah ratings generally mean fewer recharges for larger jobs.
Design and build overview
The listing describes a durable steel deck that houses the 21-inch cutting path. You get a brushless motor inside, which typically offers more torque and a longer lifespan than brushed alternatives. The unit measures 21.7 inches wide, 33.1 inches high, and 65.4 inches long. It weighs 21.7 pounds. These dimensions fit standard garages and sheds, while the weight remains manageable for transport. The finish is listed as Lmf403, a practical color for outdoor equipment that resists showing dirt.
You control the height with a single lever that adjusts to seven positions. This layout lets you change the cut quickly without stopping. The self-propelled rear-wheel drive increases traction on uneven terrain, helping you maintain a steady pace. You do not need to push the mower manually, reducing fatigue on slopes or thick grass. The 3-in-1 design allows you to switch between rear bagging, side discharge, and mulching. You can swap these functions based on your grass conditions and cleanup preferences.
According to the listing, the mower is maintenance-free regarding oil and gas. This design choice means you spend less time on upkeep and more time mowing. The compact frame and single-lever controls make it easy to maneuver in tight spaces. You can access the deck for cleaning or blade checks without complex tools. The build focuses on straightforward operation and reliable performance for average-sized lawns.
Setup And Everyday Use Guide
Setup begins with charging the included 5.0 Ah battery. The listing notes a runtime of up to 45 minutes, though this varies based on grass conditions and your technique. You will need a compatible 40V charger, which is not listed as included. Once charged, you attach the battery to the mower. The unit weighs 21.7 pounds, making it manageable to lift for installation. The 21-inch steel deck is fixed, so no blade adjustments are needed for width. You simply ensure the blade is secure before operation.
Daily use starts with an instant push-button start. There is no gas, oil, or pull-cord maintenance. The brushless motor provides quiet operation, allowing you to mow without excessive noise. The self-propelled rear-wheel drive engages automatically, reducing the physical effort required to push the mower. This feature helps you tackle uneven terrain with better traction. You control the speed by how hard you press the drive bar.
Height adjustment is handled by a single lever with seven positions. You can set this once for the entire lawn, ensuring a consistent cut across all environments. The 3-in-1 design lets you switch between mulching, rear bagging, or side discharge. For disposal, you attach the rear bag. The system is maintenance-free, meaning you do not need to change oil or spark plugs. You can also use this mower with over 75 other Greenworks 40V tools, expanding your cordless toolkit for other yard tasks.
What You Need Before Buying
You should verify that your existing Greenworks tools use the same 40V battery system before purchasing. This mower works with over 75 compatible devices, including trimmers and blowers. If you already own these tools, you can share batteries. If not, you must buy the battery and charger separately. The listing includes a 5.0 Ah battery, but you need a compatible charger to start. This mower fits well if you want to expand your cordless toolkit. It offers self-propelled power for uneven terrain. You do not need gas or oil. The steel deck is durable. Check your yard size against the 45-minute runtime. Thick grass may reduce this time. This model suits those who prefer electric maintenance-free operation. It is one of 1 options here. Compare its 21-inch cut width with other models. Ensure your storage space fits its dimensions. This choice is practical for homeowners seeking a quiet, emission-free mowing solution.
Check before you buy
- Check if you have compatible 40V batteries already.
- Confirm your yard size fits the 45-minute runtime.
- Ensure you have space for the 21-inch width.
- Buy a separate charger if not included.
Greenworks 40V 21" Self-Propelled Lawn Mower
Best for: small to medium lawns with uneven terrain
- Cutting Width
- 21"
- Drive Type
- Self-Propelled
- Voltage
- 40V
- Battery Capacity
- 5.0 Ah
- Run Time
- Up to 45 minutes
- Mowing Functions
- 3-in-1 (mulch, rear bag, side discharge)
This Greenworks mower features a 21-inch steel deck and a brushless motor for efficient cutting. It runs on a 40V 5.0Ah battery, offering up to 45 minutes of runtime. The self-propelled rear-wheel drive helps you tackle uneven terrain with ease. You get seven height adjustments and three mowing functions, including mulching and bagging. It is a maintenance-free option for homeowners who want quiet, emission-free operation.
- Brushless motor provides high torque and longer life
- Self-propelled rear-wheel drive improves traction on tough terrain
- 7-position single lever height adjustment for versatile cutting
- 3-in-1 mulch, rear bag, and side discharge capabilities
- Virtually maintenance-free with instant start and quiet operation
- 45-minute runtime may limit coverage for larger lawns
- 21.7-pound weight is manageable but adds bulk for storage
- 7-position height adjustment is fewer than some competitors
- You have a small to medium yard under half an acre
- You prefer quiet, emission-free operation over gas power
- You want a self-propelled mower for uneven terrain
- You need more than 45 minutes of continuous runtime
- You prefer a push mower without self-propulsion
- You require a cutting width wider than 21 inches
Verdict: Greenworks 40V 21" Self-Propelled Mower is a practical choice for homeowners with small to medium lawns who value quiet, emission-free operation and self-propelled ease on uneven terrain.
Specifications side by side
| Spec | Greenworks 40V 21" Self-Propelled Lawn Mower |
|---|---|
| Cutting Width | 21" |
| Drive Type | Self-Propelled |
| Voltage | 40V |
| Battery Capacity | 5.0 Ah |
| Run Time | Up to 45 minutes |
| Mowing Functions | 3-in-1 (mulch, rear bag, side discharge) |
| Motor Type | Brushless |
| Height Adjustments | 7-position |
| Power Type | Cordless |
| Dimensions | 65.4 × 21.7 × 33.1 inches |
| Weight | 21.7 pounds |
| Size | 21" Self-Propelled Mower + 5.0Ah Battery |
| Color | Lmf403 |
| Model | LMF414 |
Frequently asked questions
Is the Greenworks 40V 21" mower good for uneven terrain?
Yes, this model is a practical choice for small to medium lawns with uneven ground. It features a self-propelled drive system that helps you maintain consistent speed and control. The 21-inch cutting width allows you to cover ground efficiently without missing spots on bumpy surfaces.
What is the runtime of the included 5.0 Ah battery?
The included 5.0 Ah battery provides up to 45 minutes of runtime. This duration depends on your grass conditions and cutting technique. The 40V brushless motor ensures efficient power usage, helping you complete typical yard tasks without frequent interruptions to recharge.
Does this mower use a brushless motor?
Yes, it uses a brushless motor. This type of motor typically offers more torque than brushed alternatives, helping the mower cut through thick grass without stalling. It also generally provides a longer lifespan and requires less maintenance over time compared to traditional brushed models.
How heavy is the Greenworks 40V 21" mower?
The unit weighs 21.7 pounds. This weight includes the mower body and the included 5.0 Ah battery. The self-propelled feature helps manage this weight, making it easier to push and maneuver around your lawn without requiring excessive physical effort from you.
Can I use other Greenworks 40V batteries with this mower?
Yes, this mower works with over 75 compatible Greenworks devices. If you already own other tools in the 40V system, you can share batteries with this mower. This flexibility allows you to swap batteries between trimmers, blowers, and this mower as needed.
What are the physical dimensions of this self-propelled mower?
The mower measures 21.7 inches wide, 33.1 inches high, and 65.4 inches long. These dimensions help you determine if it fits in your storage space. The 21-inch cutting width is standard for residential mowers, balancing coverage area with maneuverability in tight spaces.
