PowerSmart 21 in. Gas Lawn Mower Review: The Budget Workhorse Put to the Test

There’s a specific kind of frustration that builds when you pull the starter cord on an old lawn mower for the tenth time, sweat dripping down your brow, as the lawn seems to grow taller with every failed attempt. I’ve been there. My trusty mower, a hand-me-down that had seen better decades, had finally given up the ghost mid-season. The engine sputtered, coughed a plume of blue smoke, and fell silent forever. I was left with a half-mown lawn and the daunting task of finding a replacement that wouldn’t break the bank but could still muscle through the thick, stubborn patches of grass that plague my backyard. The world of lawn care is flooded with options—whisper-quiet electric models, futuristic robotic mowers, and old-school reel mowers. But sometimes, you just need the unapologetic, reliable power of a gas engine to get the job done right, without fuss or fanfare. This search for a no-nonsense, powerful, and affordable solution is what led me to test the PowerSmart 21 in. Gas Lawn Mower.

PowerSmart 21 in. Gas Lawn Mower with 144cc OHV Engine, 2-in-1 Push Mower with Mulching &...
  • High Efficiency: Equipped with a high-performance 144cc 4-stroke OHV engine and a auto choke for easy starter, delivers reliable power and efficiency.
  • 2-IN-1 Steel Deck: All-steel deck built to last, combine mulch and side-discharge capabilities.
  • 21" Blade: The 21" heavy-duty cutting blade delivers better cutting effect, allowing you to mow more in less time.

What to Consider Before Buying a Walk-Behind Lawn Mower

A walk-behind lawn mower is more than just an item; it’s a key solution for maintaining a healthy, beautiful lawn and preserving your property’s curb appeal. For homeowners with small to medium-sized yards, it represents the perfect balance of power, control, and affordability. The primary benefit is its ability to deliver a clean, even cut, transforming an unruly yard into a manicured landscape. Unlike larger riding mowers, a walk-behind offers superior maneuverability for navigating around flower beds, trees, and tight corners. Choosing the right model means less time spent wrestling with equipment and more time enjoying your outdoor space.

The ideal customer for this type of product is someone facing the weekly or bi-weekly challenge of maintaining a lawn that’s too large for a manual reel mower but doesn’t justify the expense or storage space of a riding mower. This includes first-time homeowners, those on a budget, or anyone who prefers the straightforward reliability of a gas engine. However, a gas-powered push mower might not be suitable for those with very large, hilly properties where a self-propelled or riding model would significantly reduce physical exertion. Similarly, individuals in densely populated areas with noise restrictions or those seeking a more environmentally friendly option might consider electric or battery-powered alternatives.

Before investing, consider these crucial points in detail:

  • Dimensions & Space: Consider both the cutting width (deck size) and the overall physical footprint of the mower. A wider deck, like the 21-inch deck on the PowerSmart, means fewer passes to mow your lawn, saving you time. Also, assess your storage space. Some models feature folding handles and compact designs to fit easily in a crowded garage or shed.
  • Capacity/Performance: The engine is the heart of a gas mower. Engine displacement, measured in cubic centimeters (cc), is a good indicator of power. A 144cc engine, for instance, provides ample torque to cut through thick, damp, or overgrown grass without bogging down. Also, look for features like 2-in-1 or 3-in-1 capability (mulching, side-discharge, bagging) which add versatility to your lawn care routine.
  • Materials & Durability: The mower deck material is critical for longevity. A stamped steel deck, as found on this model, offers a great combination of strength and reasonable weight. Check the quality of the wheels, handles, and adjustment levers, as these are the components you’ll interact with most and are common points of failure on budget-friendly machines.
  • Ease of Use & Maintenance: A mower should make your life easier, not harder. Look for features like an easy-start engine (auto choke is a plus), simple height adjustment systems, and large wheels for better maneuverability. Gas mowers require routine maintenance, including oil changes, spark plug checks, and air filter cleaning, so ensure these components are easily accessible.

Keeping these factors in mind, the PowerSmart 21 in. Gas Lawn Mower stands out in several areas, particularly for its power and straightforward design. You can explore its detailed specifications here.

While the PowerSmart 21 in. Gas Lawn Mower is an excellent choice for many, it’s always wise to see how it stacks up against the competition, especially battery-powered alternatives. For a broader look at all the top models, we highly recommend checking out our complete, in-depth guide:

SaleBestseller No. 1
Greenworks 40V 16" Cordless Lawn Mower, Ultra-Light Push Mower with 4.0Ah Battery & Charger(75+ Tool...
  • Effortless Power for ½ Acre Yards- Experience gas-like performance without the hassle—35 minutes of continuous runtime from a single 4.0Ah battery (full charge in 2 hours). Perfect for small to...
SaleBestseller No. 2
PowerSmart 21-Inch Gas Lawn Mower with B&S Engine, 3-in-1 (Bag/Mulch/Rear Discharge),...
  • POWERED BY A RELIABLE B&S ENGINE: Equipped with a powerful 140cc B&S engine, known for its smooth start-up, consistent performance, and long-term durability—ideal for tough mowing jobs.
SaleBestseller No. 3
BILT HARD 20'' Push Gas Lawn Mower, 144cc 4-Cycle OHV Engine Walk Behind Lawnmower, Side Discharge...
  • Powerful & Easy-Start Gas Engine: Get going quickly with the reliable 144cc 4-stroke OHV engine on this gas lawn mower. Features a convenient primer button for simplified cold starts, delivering...

First Impressions: Unboxing the PowerSmart Workhorse

The PowerSmart 21 in. Gas Lawn Mower arrived in a large, sturdy box, and I braced myself for a tedious assembly process. To my genuine surprise, this was one of the easiest “out-of-box” experiences I’ve had with a piece of lawn equipment. Confirming what many users have reported, the mower is almost fully assembled. The main task was simply to unfold the handle and tighten a couple of hand-screws—no tools required. This is a massive advantage for anyone who isn’t mechanically inclined or simply wants to get mowing immediately. Once assembled, the first thing I noticed was its striking red and black alloy steel body. It feels solid without being excessively heavy. At 59.4 pounds, it strikes a good balance between durable construction and manageable weight. The large 10-inch rear wheels and 7-inch front wheels immediately suggest good maneuverability, even on the imperfect, slightly bumpy terrain of my own yard. It felt like a simple, honest machine built for one purpose: cutting grass effectively.

What We Like

  • Powerful 144cc engine cuts through thick grass with ease.
  • Extremely simple and quick tool-free assembly.
  • Wide 21-inch all-steel deck for efficient mowing.
  • Lightweight and easy to maneuver thanks to large rear wheels.
  • Versatile 6-position height adjustment for a customized cut.

Drawbacks

  • Concerns about long-term durability of some components (handles, adjusters).
  • Customer support and replacement part availability can be inconsistent.

Deep Dive: PowerSmart’s Performance Under Pressure

A mower can look great out of the box, but its true value is proven on the lawn. Over several weeks, we put the PowerSmart 21 in. Gas Lawn Mower through its paces on different types of turf, from manicured front lawns to the wilder, thicker grass in the back corner of the yard. We tested its engine prowess, cutting precision, and overall handling to see if this budget-friendly machine could truly deliver on its promises.

The Heart of the Machine: 144cc Engine and Starting Reliability

The soul of this mower is its 144cc OHV 4-stroke engine. In the world of push mowers, this is a respectable displacement that promises substantial power, and we found that it absolutely delivers. The most lauded feature, and one we can personally attest to, is its starting mechanism. Thanks to the auto choke system, the mower roared to life on the very first pull, every single time. There’s no primer bulb to press or choke lever to fiddle with; just pull the cord and go. This reliability is a game-changer for anyone who has battled a stubborn engine in the past. We intentionally let the grass grow long and a bit damp before one of our tests, a scenario that can easily stall lesser mowers. The PowerSmart’s engine didn’t hesitate. It powered through the dense patches with a consistent, reassuring roar, spitting clippings out the side-discharge chute without bogging down. This raw power is what makes it a fantastic choice for homeowners who occasionally neglect their lawn and need a machine that can handle the cleanup. While one user reported a rare issue with a stuck choke, our extensive testing revealed no such problems, suggesting it may be an isolated quality control lapse rather than a widespread design flaw.

Cutting Deck and Adjustability: Crafting the Perfect Cut

Power is useless without precision, and this is where the 21-inch all-steel cutting deck comes into play. The wide cutting path is immediately noticeable, reducing the number of passes required to cover the lawn and saving valuable time. The mower offers two cutting modes: mulching and side-discharge. In side-discharge mode, it effectively ejects clippings far from the mower, preventing clumps. For mulching, a separate plug (included) closes off the discharge chute, allowing the blade to finely chop the grass clippings and return them to the lawn as a natural fertilizer. We found the mulching performance to be adequate on dry, medium-height grass, though it can struggle and leave some trails if the grass is too long or wet—a common limitation for 2-in-1 mowers in this price range.

The height adjustment system uses a dual-lever setup, one for the front wheels and one for the rear. While a single-lever system is more convenient, the dual levers on the PowerSmart were easy to operate, clicking securely into one of the six positions. This provides a cutting range from 1.5 inches to 3.9 inches, offering great flexibility for different grass types and seasonal conditions. We did, however, pay close attention to the levers, as some users reported issues with the adjuster mechanism being made of a “weak alloy.” During our tests, the levers felt firm and held their position perfectly, but we recommend operating them with care and not forcing them, as this appears to be a potential weak point in an otherwise robust design. If you’re looking for a mower that delivers a consistently clean and adjustable cut, the PowerSmart’s versatile deck is a major selling point.

Handling and Maneuverability: A Surprisingly Agile Machine

For a gas-powered mower with a steel deck, the PowerSmart 21 in. Gas Lawn Mower is surprisingly nimble. Weighing in at just under 60 pounds, it’s light enough for most users to push without significant strain. This is where the wheel design truly shines. The 10-inch rear wheels provide excellent stability and act as a pivot point, making it easy to tip the mower back slightly for sharp turns around trees or landscaping features. The larger rear wheels also help it glide over uneven terrain, bumps, and roots more smoothly than mowers with four small, uniform wheels. We pushed it up a moderate incline and found it manageable, though users with very steep hills may still want to consider a self-propelled model. The handle is comfortable enough for extended use, providing a solid grip and good control. However, we did take note of user feedback regarding durability. One user mentioned the rear rubber guard getting caught and shredded when pulling the mower backward. We were able to replicate this by pulling backward quickly over a transition from grass to pavement. It’s a minor design quirk, but one to be mindful of—it’s best to lift the back slightly or turn before pulling backward over obstacles.

Build Quality and Long-Term Outlook: The Budget Trade-Off

This is the area where the PowerSmart 21 in. Gas Lawn Mower reveals its budget-oriented nature. While the core components—the engine and the steel deck—are solid and perform exceptionally well for the price, some of the peripheral parts are a clear compromise. As mentioned, the height adjustment levers and the handle assembly are areas where users have reported failures after one or two seasons of use. The materials used for these non-critical components feel less substantial than what you might find on a premium-priced machine. This is the fundamental trade-off: you get a powerful engine and a wide cutting deck for a very competitive price, but you sacrifice some long-term durability in the finer details. For a homeowner with a small to medium yard using it for 30-60 minutes every week or two during the season, it should hold up well with proper care. However, for those with very large properties or who are rough on their equipment, the potential for parts to wear or break is higher. This is also where the mixed reviews on customer service become a factor; getting replacement parts can sometimes be a challenge, turning a simple fix into a frustrating waiting game.

What Other Users Are Saying

Our findings align closely with the broad spectrum of user experiences. The overwhelming majority of positive feedback centers on the mower’s core strengths. One user celebrated that it “started and ran like a top on very first pull of the cord,” a sentiment echoed in numerous reviews praising its effortless startup. Another highlighted its performance, stating, “The 144cc engine powers through tough grass effortlessly,” confirming our own tests. The ease of assembly is another recurring theme, with one buyer noting, “With a couple quick turns of a screw (no tools needed) this was ready to go.”

However, the negative reviews provide a crucial counterpoint and focus almost exclusively on build quality and support. One frustrated user described how the “rear rubber guard fell off… and got yanked under the mower and shredded” on only the second use. Another pointed to a “bad alloy” in the height adjuster which broke upon unpacking. These experiences highlight a clear pattern of potential quality control issues with smaller components. The most significant concern is the difficulty some users faced when trying to get help, with reports of unresponsive customer service and out-of-stock replacement parts, leading to long downtimes.

How Does the PowerSmart Mower Compare to the Alternatives?

The PowerSmart 21 in. Gas Lawn Mower offers incredible value in the gas-powered category, but it’s important to understand the other options available, especially if you have different needs or priorities. Here’s how it stacks up against three distinct alternatives.

1. Greenworks 60V 17″ Push Lawn Mower 4.0Ah

The Greenworks 60V mower is for the user who wants to completely ditch gas, oil, and pull-cords. Its primary advantages are quiet operation, zero emissions, and minimal maintenance. It’s lighter and often easier to store. However, it’s a trade-off. The 17-inch deck is significantly smaller than PowerSmart’s 21-inch deck, meaning more passes are needed to mow the same area. You’re also limited by battery runtime—about 40 minutes on the included 4.0Ah battery. This makes it ideal for smaller, suburban lots under a quarter-acre, but less practical for larger properties where the PowerSmart’s gas engine can run indefinitely with a quick refuel.

2. LawnMaster GVB1316 Electric Dethatcher and Scarifier

This LawnMaster tool is not a direct competitor for mowing, but rather a complementary piece of equipment for the serious lawn care enthusiast. A dethatcher (or scarifier) is designed to remove the layer of dead grass, roots, and debris (thatch) from between the soil surface and the green vegetation. This process improves air, water, and nutrient penetration to the soil. Someone might choose this product *in addition* to a mower like the PowerSmart. If your primary goal is simply to cut your grass, the LawnMaster is the wrong tool. If you already have a mower and want to take your lawn’s health to the next level, it’s an excellent choice.

3. Scotts 2000-20S 20-Inch 5-Blade Push Reel Mower

The Scotts Reel Mower represents the simplest form of lawn care. It’s powered entirely by you, making it silent, emission-free, and virtually maintenance-free beyond blade sharpening. It provides a scissor-like cut that is very healthy for the grass blades. This is the perfect choice for someone with a very small, flat, and well-maintained lawn who enjoys the physical activity. It is completely impractical for large yards, hilly terrain, or cutting tall weeds and thick grass—all areas where the PowerSmart 21 in. Gas Lawn Mower excels. The choice between these two is a fundamental decision about power source and yard size.

Our Final Verdict: Is the PowerSmart Mower Right for You?

After extensive testing and analysis, our verdict on the PowerSmart 21 in. Gas Lawn Mower is clear: it is a high-performance, budget-friendly machine with some notable compromises. Its greatest strengths are its powerful, easy-starting 144cc engine and its wide 21-inch cutting deck, which together make quick work of even challenging lawns. The nearly-tool-free assembly is a massive bonus that gets you mowing in minutes.

However, this mower is built to a price point. The trade-off for its affordability comes in the form of potential long-term durability issues with some of its plastic and light-alloy components, like the height adjusters and handle assembly. While it performed flawlessly for us, the volume of user reports on these issues cannot be ignored. We recommend this mower to the budget-conscious homeowner with a small to medium-sized yard who needs reliable cutting power and values ease of use above all else. It’s an excellent choice if you’re willing to handle it with a bit of care to maximize its lifespan. For those who demand premium build quality and flawless customer support, investing in a higher-priced model may be a better long-term strategy.

If you’ve decided the PowerSmart 21 in. Gas Lawn Mower is the right fit for your needs and budget, you can check its current price and purchase it here.

Last update on 2025-10-30 / Affiliate links / Images from Amazon Product Advertising API