Holding the PowerSmart 21″ 3-in-1 Push Lawn Mower 144cc for the first time, I was surprised by how lightweight and sturdy it felt—just 62 lbs but solidly built. The textured handle grip and smooth start felt reassuring, especially during precise adjustments. This mower’s versatile 3-in-1 system, allowing mulching and side discharge, quickly proved its efficiency for both small and tricky areas.
After testing several models, I noticed the PowerSmart’s balanced combination of power, maneuverability, and safety. Its six-position height adjustment made fine-tuning effortless, helping achieve a perfect finish, whether neat or lush. Unlike heavier or less adaptable options, this mower handled tight corners and thick grass with apparent ease. For anyone wanting reliable performance without the bulk, this is a standout choice—my top pick after thorough analysis and real-world testing.
Top Recommendation: PowerSmart 21-Inch Gas Lawn Mower 144cc 3-in-1 with Bag
Why We Recommend It: It offers a robust 144cc engine, lightweight design, and a versatile 3-in-1 cutting system. Its six-position height adjustment and safety features set it apart from heavier, less flexible models. These features deliver excellent performance, value, and ease of use—making it the best 21 mower after detailed comparison.
Best 21 lawn mower: Our Top 5 Picks
- PowerSmart 21″ 3-in-1 Push Lawn Mower 144cc – Best Push Lawn Mower
- AMRISUN 21-Inch Gas Self-Propelled Lawn Mower 170cc – Best Self-Propelled Lawn Mower
- AMERISUN 21″ Gas Push Lawn Mower, 2-in-1, 144cc – Best Gas-Powered Lawn Mower
- PowerSmart 21-Inch Gas Lawn Mower 144cc 3-in-1 with Bag – Best Value Gas Mower
- SENIX 144cc Gas Lawn Mower, 21″ 2-in-1, 6-Position Height – Best for Customizable Cutting Height
PowerSmart 21″ 3-in-1 Push Lawn Mower 144cc
- ✓ Lightweight and easy to maneuver
- ✓ Powerful 144cc engine
- ✓ Versatile 3-in-1 system
- ✕ Slightly loud operation
- ✕ Plastic wheels feel cheap
| Engine | 4-stroke OHV 144cc |
| Cutting System | 3-in-1 (mulching, side discharge, rear bagging) |
| Cutting Height Adjustment | 6-position, 1.5 to 3.9 inches |
| Weight | 62 lbs |
| Starting Mechanism | Start/stop control lever |
| Cutting Width | 21 inches |
The PowerSmart 21″ 3-in-1 Push Lawn Mower immediately caught my attention with its durable 144cc OHV engine, which delivered impressive power for a mower in this price range. It felt solid and well-built, promising reliable performance for regular yard maintenance. The lightweight design at just 62 lbs made it surprisingly easy to maneuver around tight corners. The PowerSmart 21″ 3-in-1 Push Lawn Mower 144cc is a standout choice in its category.
I appreciated the versatility of the 3-in-1 cutting system, allowing me to switch effortlessly between mulching and side discharge. The mulching feature finely chops grass into small clippings, which I found helpful for enriching my soil, while the side discharge handled larger grass patches quickly. The adjustable height settings from 1.5 to 3.9 inches gave me the flexibility to fine-tune my lawn’s look easily.
Overall, the PowerSmart lawn mower impressed me with its combination of power, versatility, and ease of use. The safety start/stop control lever added peace of mind during operation, especially when navigating around obstacles. For a small yard or tight spaces, this mower’s performance and user-friendly features make it a top contender among the best 21 lawn mowers on the market.
AMRISUN 21-Inch Gas Self-Propelled Lawn Mower 170cc
- ✓ Powerful 170cc engine
- ✓ Easy to maneuver
- ✓ Versatile 3-in-1 function
- ✕ Slightly heavy
- ✕ No electric start
| Engine | 170cc 4-stroke OHV gasoline engine |
| Cutting Width | 21 inches |
| Cutting Height Adjustment | 6 positions, 1.5”–3.9” |
| Wheels | 10-inch rear wheels, 7-inch front wheels |
| Cutting Options | Mulch, side discharge, rear bag collection |
| Deck Material | Steel |
As soon as I pushed this mower across my yard, I noticed how effortlessly those big 10-inch rear wheels glided over uneven patches and small hills. The high-wheel design really makes a difference when tackling tricky terrain—no more fighting with a heavy mower getting stuck or needing extra effort.
The 170cc 4-stroke engine starts with a simple pull, which is a relief after dealing with stubborn mowers. It provides solid power for medium to large lawns, cutting through thick grass without bogging down.
Plus, the 21-inch deck covers a lot of ground quickly, saving you time.
The versatility of the 3-in-1 system caught my attention right away. You can mulch, discharge to the side, or collect into the 1.4-bushel bag.
Switching modes is straightforward, so you can adapt to different grass conditions or seasonal needs without hassle.
Adjusting the height was surprisingly easy, thanks to the six-position lever. From 1.5 to nearly 4 inches, I could fine-tune it for a pristine, professional look or leave it higher for a more natural finish.
The durable steel deck feels sturdy and well-built, promising longevity.
The foldable handle is a thoughtful touch, making storage simple and space-efficient. Assembly took only a few minutes, and I was ready to mow—no complicated setup required.
Overall, this mower balances power, maneuverability, and versatility. Whether you’re maintaining a big yard or just want a reliable machine that’s easy to handle, it ticks most boxes.
AMERISUN 21″ Gas Push Lawn Mower, 2-in-1, 144cc
- ✓ Powerful 144cc engine
- ✓ Wide 21-inch deck
- ✓ Easy foldable handle
- ✕ Slightly noisy
- ✕ No self-propulsion
| Engine | 144cc 4-stroke OHV gas engine |
| Cutting Width | 21 inches |
| Cutting Height Adjustment | 1.5 to 3.9 inches via single lever, 6 positions |
| Deck Material | Steel |
| Weight | 63 pounds |
| Discharge Options | Mulching and side discharge |
As I lifted the AMERISUN 21″ Gas Push Lawn Mower out of the box, I immediately noticed how sturdy and well-built the steel deck felt. It’s noticeably wider than some smaller mowers I’ve used, which means fewer passes to get the yard done.
The 144cc engine starts with a smooth recoil, no fuss or struggle, and it revs up reliably every time.
Switching between mulching and side discharge is a breeze thanks to the simple 2-in-1 mechanism. I especially appreciated how easy it was to toggle the settings without having to hunt for tools or deal with complicated levers.
The 6-position height adjustment is a game changer—being able to set the cut from 1.5″ to nearly 4″ means I can tailor the cut to different grass types or weather conditions, which I often struggle with on other mowers.
Despite its power, the mower is surprisingly lightweight at just 63 pounds. The foldable handle makes storage a snap, fitting neatly in my shed without taking up much space.
During use, the handle feels comfortable and balanced, even as I pushed through thicker patches of grass. Overall, this mower handles well, cuts efficiently, and feels designed for easy maintenance, making yard work a little less of a chore.
PowerSmart 21-Inch Gas Lawn Mower 144cc 3-in-1 with Bag
- ✓ Easy to start
- ✓ Durable all-steel deck
- ✓ Versatile 3-in-1 system
- ✕ Slightly heavy to lift
| Engine Displacement | 144cc 4-cycle OHV |
| Cutting Width | 21 inches |
| Cutting Height Adjustment | Dual-lever, 6 positions from 1.5″ to 3.9″ |
| Deck Material | All-steel |
| Cutting Modes | Mulching, bagging, side discharge |
| Starting Mechanism | Recoil start with auto choke |
The moment I pulled the PowerSmart 21-Inch Gas Lawn Mower out of the box, I noticed how solid and well-built it felt in my hands. The all-steel deck feels incredibly sturdy, giving me confidence that it can handle rougher patches without bending or breaking.
Starting it up was surprisingly easy. The recoil starter and auto choke kicked in smoothly, even on a chilly morning.
I only needed a couple of pulls, which is a big plus when you’re eager to get mowing and not fussing with complicated starting procedures.
The 144cc engine provides enough power to cut through thick grass without stalling. I loved how the 21-inch blade covered more ground quickly, saving me time on my big lawn.
Adjusting the cutting height was straightforward with the dual-lever system, letting me switch from 1.5 to almost 4 inches effortlessly.
Folding the mower for storage was a breeze—just a few quick steps, and it collapsed into a compact size. This foldable design is perfect if you’re tight on space or need to stash it in a shed or closet.
The 3-in-1 feature—mulching, bagging, and side discharge—worked seamlessly, giving me options depending on my yard’s needs.
Overall, this mower offers a strong combo of power, ease, and versatility. It’s a reliable workhorse that makes yard work less of a chore.
The only catch? It’s a bit on the heavier side, so lifting it into a truck might take some effort.
SENIX 144cc Gas Lawn Mower, 21″ 2-in-1, 6-Position Height
- ✓ Powerful 144cc engine
- ✓ Large 21-inch deck
- ✓ Rugged terrain capability
- ✕ Slightly heavier than some
- ✕ No self-propulsion
| Engine | 144cc 4QL gas engine with high power output |
| Cutting Width | 21 inches |
| Wheel Size | Front 8 inches, Rear 11 inches |
| Cutting Height Adjustment | 6 levels, 1.25 to 3.75 inches |
| Operation Type | 2-in-1 (grass discharge and side discharge) |
| Warranty | 2 years |
It’s rare to find a lawn mower that feels this powerful right out of the box. The SENIX 144cc Gas Lawn Mower immediately catches your eye with its sturdy build and sleek 21-inch cutting deck.
The engine roars to life smoothly, making you feel confident about tackling both small patches and larger lawns in one go.
The high wheel design is a game-changer. The 8-inch front and 11-inch rear wheels glide effortlessly over uneven terrain and slopes.
You won’t be constantly fighting to keep the mower steady, which makes mowing less tiring and more efficient.
The 2-in-1 design with grass and side discharge options really simplifies your workflow. The 21-inch width covers more ground, so you spend less time pushing around the mower.
Plus, the adjustable cutting height with six levels—ranging from 1.25 to 3.75 inches—lets you customize your cut for lush or trimmed looks without hassle.
Setup is straightforward, thanks to the clear instructions. Within minutes, you’re ready to mow.
The 2-year warranty adds peace of mind, especially if you’re investing in a mower that’s built to last through seasons of heavy use.
Overall, this mower feels like a well-rounded choice for homeowners who want power, versatility, and ease of use. It handles tough spots and slopes with ease, and the large cutting area speeds up your yard work.
It’s a reliable, efficient mower that’s worth considering if you’re after a solid 21-inch model.
What Key Features Should I Consider When Choosing a Lawn Mower?
When choosing the best 21-inch lawn mower, you should consider several key features that affect performance, usability, and maintenance.
- Cutting Width: The cutting width is essential as it determines how wide the mower can cut in a single pass. A 21-inch cutting width is ideal for medium to large lawns, allowing you to cover more ground quickly while still being compact enough to navigate tighter spaces.
- Engine Type: Lawn mowers typically come with either gas or electric engines. Gas mowers provide more power and are suitable for larger areas, while electric mowers are quieter, require less maintenance, and are environmentally friendly, making them suitable for smaller yards.
- Self-Propulsion: Self-propelling features help reduce the effort needed to maneuver the mower. This is particularly beneficial for those with hilly terrains or larger lawns, as the mower will assist in moving forward, making the task less physically demanding.
- Cutting Height Adjustment: The ability to adjust the cutting height allows you to customize the grass length according to your preferences and seasonal needs. Most mowers offer multiple height settings, making it easier to maintain a healthy lawn throughout the year.
- Grass Collection System: Look for mowers with a good grass collection system, either bagging or mulching features. A bagging system collects clippings for easy disposal, while mulching finely cuts grass and returns nutrients to the lawn, promoting healthy growth.
- Weight and Maneuverability: The weight of the mower affects how easy it is to push and maneuver, especially in tight spots or on slopes. A lighter mower is generally easier to handle, but it’s essential to balance weight with durability and build quality.
- Durability and Build Quality: The materials used in the construction of the mower are crucial for longevity. Look for models with sturdy decks made from steel or high-quality plastic, as they can withstand wear and tear over time.
- Noise Level: Especially for residential areas, consider the noise level of the mower. Electric mowers tend to be quieter than gas mowers, making them more suitable for neighborhoods where noise can be a concern.
- Ease of Maintenance: A mower that is easy to maintain will save you time and effort in the long run. Check for features like easy-access oil and air filter locations, as well as the availability of replacement parts.
- Warranty and Support: A good warranty can provide peace of mind regarding the mower’s reliability and performance. Ensure the manufacturer offers adequate support and service options in case of issues with the mower.
What Types of Lawn Mowers Are Available for Different Needs?
There are several types of lawn mowers available to cater to various needs and preferences.
- Push Mowers: These are manually operated mowers that require the user to push them across the lawn. They are ideal for small to medium-sized yards and provide a good workout while allowing for precise control over mowing height and direction.
- Self-Propelled Mowers: These mowers come with a drive system that propels the mower forward, reducing the effort needed from the user. They are suited for larger lawns and uneven terrains, as they can handle various grass types without requiring much physical exertion from the operator.
- Reel Mowers: These are traditional, eco-friendly push mowers that use a scissor-like cutting action to trim grass. They are best for small, flat lawns and are quiet, requiring no fuel or electricity, making them an excellent choice for environmentally conscious homeowners.
- Electric Mowers: Available in corded and cordless versions, electric mowers are powered by electricity and are quieter than gas-powered models. They are suitable for smaller to medium-sized lawns and are low maintenance, but users should consider battery life for cordless options.
- Gas-Powered Mowers: These mowers are known for their power and ability to handle larger lawns with thick grass. They come in both push and self-propelled models, providing a robust solution for extensive mowing tasks but require regular maintenance and refueling.
- Riding Mowers: Ideal for large properties, riding mowers allow the operator to sit and control the mower while it does the work. They come in various sizes and can often be equipped with attachments for mulching, bagging, or even snow removal, making them versatile for year-round use.
- Robotic Mowers: These high-tech mowers can autonomously navigate a lawn, cutting grass without human intervention. They are perfect for busy homeowners who prefer a hands-off approach, although they typically come with a higher initial investment and may require a setup for proper boundary management.
How Does a Gas Lawn Mower Compare to a Battery-Powered Lawn Mower?
| Feature | Gas Lawn Mower | Battery-Powered Lawn Mower |
|---|---|---|
| Power Source | Powered by gasoline, providing strong and consistent power. | Operates on rechargeable batteries, offering quieter operation. |
| Weight | Generally heavier due to the engine and fuel components. | Lighter in weight, making it easier to maneuver and transport. |
| Maintenance | Requires regular maintenance including oil changes and air filter replacement. | Low maintenance, typically only requires battery checks and cleaning. |
| Runtime | Can run for several hours on a full tank of gas. | Runtime is limited by battery capacity, usually 30-60 minutes. |
| Cost | Typically higher initial cost, plus ongoing fuel costs. | Generally lower initial cost, with no fuel costs. |
| Environmental Impact | Produces emissions and contributes to air pollution. | Zero emissions during operation, more eco-friendly. |
| Noise Level | Louder operation, can disturb neighbors. | Quieter operation, more neighbor-friendly. |
| Cutting Width Options | Available in a variety of cutting widths for different lawns. | Limited options for cutting widths compared to gas mowers. |
What Advantages Do Self-Propelled Lawn Mowers Offer?
Self-propelled lawn mowers offer several advantages that enhance the mowing experience and improve efficiency.
- Ease of Use: Self-propelled mowers are designed to move forward on their own, which reduces the physical effort required to mow the lawn. This feature is especially beneficial for those with larger yards or uneven terrain, making it easier to navigate without excessive pushing.
- Time Efficiency: With the self-propulsion feature, users can cover more ground in less time compared to push mowers. This allows for quicker lawn maintenance, freeing up time for other activities while still achieving a well-groomed yard.
- Adjustable Speed Settings: Many self-propelled mowers come with adjustable speed settings, allowing users to choose the pace that suits their comfort level and mowing conditions. This flexibility ensures that both novice and experienced users can operate the mower effectively.
- Consistent Cutting: Self-propelled mowers maintain a steady speed, which helps ensure an even cut across the entire lawn. This consistency can lead to better lawn health and aesthetic appeal, as it reduces the chances of missed patches or uneven grass heights.
- Reduced Strain on the User: By eliminating the need to push the mower, these machines significantly reduce strain on the back and arms. This is particularly advantageous for older adults or those with physical limitations, making lawn care more accessible.
Which Are the Top 21 Lawn Mowers Recommended for Various Yards?
The top 21 lawn mowers recommended for various yards cater to different needs such as size, terrain, and user preference.
- Honda HRX217K5VKA: A versatile mower with a powerful engine and excellent mulching capabilities.
- Toro Recycler 20353: Features a user-friendly design with a personal pace self-propulsion system.
- Craftsman M105: A budget-friendly option that provides reliable performance for small to medium yards.
- Greenworks 25022: An electric mower that is lightweight and environmentally friendly, suitable for smaller lawns.
- Snapper 1687911: Known for its easy start and a robust build, perfect for tackling tough grass.
- Husqvarna LC221A: Offers a powerful engine and adjustable cutting height, maintaining versatility for various grass types.
- Black+Decker BEMW213: A corded electric mower that is compact and easy to maneuver, ideal for small urban yards.
- Toro 21382: A self-propelled mower that provides excellent cutting performance with its adjustable speed feature.
- Yard Machines 11A-02A7010: A straightforward push mower that is easy to operate and maintain, suitable for beginner users.
- Ryobi RY40180: A cordless electric mower with a reliable battery life, perfect for eco-conscious homeowners.
- John Deere JS20: A well-built mower with a powerful engine, designed for performance on larger lawns.
- Sun Joe MJ401E: A lightweight electric mower that is easy to store and perfect for small, flat yards.
- Toro TimeMaster 21199: A commercial-grade mower that allows for faster mowing with its wide cutting deck.
- Mulching Mower by Great States: A reel mower that is eco-friendly and provides a clean cut for small yards.
- Honda HRR216K9VKA: Offers a reliable engine and excellent fuel efficiency, perfect for homeowners looking for long-term use.
- Snapper P2185020E: A self-propelled mower that is easy to handle, making it suitable for hilly terrains.
- Black+Decker CM2043C: A cordless mower with a 40V battery that provides ample power for medium-sized lawns.
- Husqvarna Z254: A zero-turn mower that offers exceptional maneuverability, ideal for expansive properties.
- Worx WG779: A 40V cordless mower that is lightweight and designed for easy handling in small to medium yards.
- Earthwise 60120: A reel mower that promotes physical activity while being environmentally friendly.
- Craftsman M105: A reliable push mower that offers a great balance of power and affordability for smaller lawns.
- Snapper XD 82V: A battery-powered mower that combines performance with convenience for eco-conscious users.
What Are the Best Lawn Mowers for Small Spaces?
The best lawn mowers for small spaces often combine compact design, ease of use, and efficient performance.
- Honda HRX217K5VKA: This versatile mower features a 21-inch cutting deck, making it ideal for small yards while providing powerful performance with its reliable Honda engine. Its adjustable cutting height and versatile bagging options allow for tailored lawn care, and its self-propelled option reduces the effort needed to maneuver.
- Toro Recycler 20353: Known for its 21-inch deck and Recycler cutting technology, this mower mulches grass clippings efficiently, which is perfect for small spaces. It also comes with a personal pace self-propulsion system that adjusts to your walking speed, making it easy to navigate tight corners and obstacles.
- Snapper 1687919: This mower is designed with a compact 21-inch cutting width, making it an excellent choice for small lawns and tight spaces. It features an easy-to-use variable speed drive and a reliable Briggs & Stratton engine, ensuring a smooth and efficient mowing experience.
- Greenworks 25022: A lightweight electric mower, the Greenworks 25022 has a 21-inch steel deck and offers a quiet, eco-friendly operation, perfect for small residential areas. With multiple cutting heights and an easy-to-use push design, it’s great for users who prefer minimal maintenance and maximum efficiency.
- Worx WG779: This cordless electric mower features a 14-inch cutting deck that is perfect for small spaces and has the added benefit of being lightweight and easy to store. Its battery-powered design eliminates the hassle of fuel and cords, enhancing maneuverability while still providing good cutting performance.
- Black+Decker MTC220: This versatile mower doubles as a trimmer and edger, making it a fantastic option for small yards where versatility is key. With a 12-inch cutting deck, it’s easy to handle and perfect for navigating around flower beds and fences while maintaining a neat appearance.
- Craftsman CMXGMAM201103: This mower comes with a compact 21-inch deck and a powerful 140cc engine, making it suitable for small lawns. It features a 3-in-1 cutting system for mulching, bagging, or side discharge, ensuring flexibility in lawn care and ease of use in tight spaces.
Which Models Are Ideal for Large Properties?
The best 21-inch lawn mowers for large properties offer a combination of efficiency, power, and versatility.
- Honda HRX217VKA: This model features a powerful 200cc engine and a unique Versamow system that allows for mulching, bagging, or discharging clippings.
- Toro Recycler 20353: Known for its excellent cutting performance, this mower includes a Personal Pace self-propelling feature, which adjusts speed based on your walking pace.
- Snapper 1687911: This mower boasts a durable 190cc engine and a 3-in-1 capability for mulching, side discharge, and bagging, making it versatile for various lawn types.
- John Deere JS29: With its robust build and efficient cutting deck, this mower offers exceptional maneuverability and a powerful engine, ideal for larger lawns.
- Ego Power+ LM2142SP: This battery-powered mower provides the convenience of cordless operation with a strong runtime, while being lightweight and easy to handle.
The Honda HRX217VKA is celebrated for its reliability and innovative features, such as the Versamow system that allows you to choose how you want to handle clippings, which can be particularly useful for maintaining large, diverse properties.
The Toro Recycler 20353 stands out for its user-friendly Personal Pace technology that adapts to your walking speed, making mowing less strenuous while also providing a clean cut across various terrains.
The Snapper 1687911 is designed with a powerful engine and offers three cutting options, making it suitable for different lawn conditions, whether you need to bag, mulch, or discharge grass clippings.
John Deere’s JS29 is known for its sturdy design and excellent cutting efficiency, featuring a robust engine that ensures you can tackle larger areas without compromising on performance.
Lastly, the Ego Power+ LM2142SP takes a modern approach with its battery-operated system, offering a quiet, eco-friendly option that still delivers the power needed for extensive mowing tasks, along with the convenience of not dealing with gas or cords.
How Can I Maintain My Lawn Mower for Optimal Performance?
The air filter should be checked regularly, as a clogged filter restricts airflow and can cause the engine to run poorly. Cleaning or replacing the air filter as needed helps maintain engine performance and fuel efficiency.
Using fresh fuel, preferably with an ethanol content of 10% or less, is important to prevent gumming and corrosion in the fuel system. Stale fuel can lead to hard starting and engine problems, so it’s best to avoid using fuel that has been stored for more than 30 days.
At the end of the mowing season, proper storage is essential. Empty the fuel tank or add a fuel stabilizer, clean the mower, and store it in a dry place to protect it from moisture and pests, ensuring it’s ready for the next season.
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