PowerSmart 21" Gas Lawn Mower Review: Specs, Pros and Cons
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This powersmart 21 gas lawn mower review covers the PowerSmart B8721P. It is a push mower with a 21-inch steel deck and a 140cc Briggs & Stratton E550 engine. The unit weighs 63 pounds and measures 32 inches long. You get three mowing modes: mulching, bagging, or rear discharge. The bag holds 1.4 bushels. Height adjusts in six positions via the rear wheels. This model uses a Prime 'N Pull starter system. It is designed for straightforward lawn care without self-propulsion complexity.
What stands out
- 140cc Briggs & Stratton E550 engine with Prime 'N Pull starting
- Rugged 21-inch all-steel deck for durability
- Three-in-one functionality: mulch, bag, or rear discharge
- Six-position rear wheel height adjustment
- Foldable design for compact storage
Who it fits
Good fit for
This mower suits owners of small to medium lawns who prefer manual push operation. The 21-inch cutting width covers ground efficiently without the weight of self-propelled models. If you value a durable steel deck and reliable Briggs & Stratton power, this fits your needs. The easy assembly and foldable design help those with limited storage space. It is ideal for flat to gently sloping yards where you do not need extra propulsion power.
Who should skip it
Skip this model if you need self-propelled drive for steep hills or large properties. The push-only design requires more physical effort on uneven terrain. If you prefer side discharge over rear discharge, check the variations, as this specific listing is for rear discharge. Those wanting electric or cordless power should look elsewhere, as this runs on gas. The 1.4-bushel bag may require frequent emptying on larger lawns.
Verdict: The PowerSmart 21-inch gas mower offers solid, no-frills performance for smaller yards. Its steel deck and reliable engine make it a practical choice for basic mowing tasks.
PowerSmart 21 Gas Key Specs
Drive Type: Push
You must physically push this mower across the lawn. There is no self-propelled mechanism to assist with forward motion. This design keeps the unit lighter and simpler than motorized models. It suits flat yards where you are comfortable with the physical effort. When comparing to cordless electric mowers, you will note that many electric options also lack self-drive, keeping costs and maintenance lower.
Power Source: Gas, 140cc B&S E550 engine
This mower runs on gasoline powered by a Briggs & Stratton engine. The 140cc displacement indicates a moderate power output for standard residential tasks. You will need to mix fuel and maintain the engine oil regularly. This contrasts with cordless mowers that use rechargeable batteries. Gas engines often provide consistent power for longer sessions without worrying about battery depletion or recharging times.
Cutting Width: 21 in
The deck covers a 21-inch swath with each pass. This width balances efficiency and maneuverability for average-sized yards. You will make fewer passes compared to narrower 16-inch models. However, it may be harder to navigate tight spaces between garden beds or obstacles. When shopping for cordless alternatives, you will find similar widths, but the gas engine may handle thicker grass more easily.
Deck Material: Steel
The cutting deck is constructed from all-steel material. Steel decks are generally more durable and resistant to impacts from rocks or debris than plastic or aluminum alternatives. They also tend to be heavier, which can help with mulching performance by keeping the deck stable. You will need to check for rust over time. This material choice offers longevity but adds to the overall weight of the unit.
Mowing Function: 3-in-1: mulch, bag, rear discharge
You have three options for handling grass clippings: mulching them back into the lawn, bagging them for disposal, or discharging them to the rear. This versatility allows you to adapt to different lawn conditions and preferences. You can switch between modes easily. Cordless mowers often offer similar functions, but the gas engine may process wetter grass more effectively without clogging the discharge chute.
Design and Build Quality
The PowerSmart B8721P features a rugged all-steel deck that is built to last. According to the listing, this material choice provides durability against impacts and debris. The deck houses a 21-inch superior mulching blade designed to help you finish mowing faster. The unit is finished in bright red, offering high visibility in the yard. The overall build prioritizes longevity over weight reduction, resulting in a sturdy frame that can handle uneven terrain without flexing.
You must physically push this mower, as it lacks a self-propelled mechanism. This design keeps the unit lighter than motorized models but requires more effort from you. The mower measures 32 inches in length, 22 inches in height, and 16 inches in width. It weighs 63 pounds, which is manageable for most users but heavy for lifting into a trunk. The foldable design makes it easy to assemble and fold for storage, saving space in your garage or shed.
Cutting height is adjusted quickly with a six-position rear wheel height adjustment. You can choose between mulching, bagging, or rear discharge modes. The included 1.4-bushel capacity grass mower bag is easy to empty, saving you time and effort. The Prime 'N Pull system on the 140cc Briggs & Stratton engine ensures reliable power and low noise. This layout is practical for small to medium yards where simplicity and durability are key.
Setup And Everyday Use Guide
Assembly begins with the foldable design. The listing states this feature makes setup quick and straightforward. You attach the handle and wheels to the 21-inch steel deck. The process is designed to be simple, allowing you to get the mower ready for use without complex tools or long waits. Once assembled, the unit stands 22 inches tall and weighs 63 pounds. This weight requires you to push the mower manually. There is no self-propelled drive to assist with forward motion. You control the speed and direction entirely through your own effort. The 140cc Briggs & Stratton E550 engine starts via Prime 'N Pull. This system aims to provide reliable ignition with minimal effort. The engine delivers power for the 21-inch blade, helping you finish mowing faster. Daily operation involves adjusting the cutting height. You can select from six positions using the rear wheel adjustment mechanism. This allows you to change the cut level quickly. The mower offers three functions: mulching, bagging, or rear discharge. You choose the mode based on your lawn care needs. The 1.4-bushel grass bag is easy to empty, saving time. The bright red color makes the unit visible in your yard. Storage is simple because the mower folds down. It measures 16 inches wide and 32 inches long when folded. This compact footprint fits easily in a garage or shed. The steel deck provides durability for everyday use on yards and gardens.
Before You Buy This Gas Mower
You are choosing a gas model in a guide focused on cordless options. This PowerSmart B8721P requires regular fuel and oil maintenance. You must check your local regulations for small engine emissions. The 140cc Briggs & Stratton engine needs fresh gas to start reliably. You should store fuel properly to prevent degradation. This mower is heavier than electric models at 63 pounds. You need a flat surface to push it easily. The 21-inch steel deck is durable but requires cleaning after use. You must empty the 1.4-bushel bag frequently. This unit suits larger yards where battery life is a concern. It does not fit in small sheds due to its 32-inch length. You should compare it against lighter, battery-powered alternatives for ease of use. Consider your storage space and physical ability to push the mower. This choice prioritizes power and runtime over convenience and quiet operation.
Check before you buy
- Check local emissions regulations for small gas engines.
- Ensure you have adequate storage for the 32-inch length.
- Verify your ability to push the 63-pound unit.
- Confirm availability of fresh gasoline for reliable starts.
The product at a glance
PowerSmart 21-Inch Gas Push Lawn Mower
Best for: small lawns and manual mowing
- Power Source
- Gas, 140cc B&S E550 engine
- Cutting Width
- 21 in
- Drive Type
- Push
- Deck Material
- Steel
- Cutting Height
- 6 positions
- Mowing Function
- 3-in-1: mulch, bag, rear discharge
View on Amazon: PowerSmart 21-Inch Gas Push Lawn Mower Affiliate link
This PowerSmart mower features a 21-inch steel deck and a 140cc Briggs & Stratton E550 engine. It offers three mowing modes: mulching, bagging, and rear discharge. The 1.4-bushel bag is easy to empty. You adjust the cutting height with six rear-wheel positions. The unit weighs 63 pounds and folds for storage. It suits small to medium lawns where manual pushing is acceptable.
Pros
- 140cc Briggs & Stratton E550 engine for reliable power
- 21-inch all-steel deck for durability
- 3-in-1 mulching, bagging, and rear discharge options
- 6-position rear wheel height adjustment
- Foldable design for compact storage
Cons
- Push drive type requires physical effort
- 63-pound weight is heavy for some users
- No self-propelled mechanism included
Good fit if
- You have a small yard under 5,000 square feet
- You prefer manual control over self-propelled speed
- You need a durable steel deck for rough terrain
Skip if
- You have a large or steep lawn
- You want a self-propelled mower to reduce effort
- You prefer electric or battery-powered operation
Verdict: PowerSmart 21" Push Gas Mower is a solid choice for homeowners with small, flat lawns who want durable steel construction and manual control. It fits buyers who do not mind pushing a 63-pound machine for a reliable cut.
Specifications side by side
| Spec | PowerSmart 21-Inch Gas Push Lawn Mower |
|---|---|
| Power Source | Gas, 140cc B&S E550 engine |
| Cutting Width | 21 in |
| Drive Type | Push |
| Deck Material | Steel |
| Cutting Height | 6 positions |
| Mowing Function | 3-in-1: mulch, bag, rear discharge |
| Application | Yard, Garden, Lawn |
| Dimensions | 32 × 16 × 22 inches |
| Weight | 63 pounds |
| Color | Bright red |
| Model | B8721P |
Frequently asked questions
Is the PowerSmart 21 self-propelled?
No, this model is a push mower. You must physically push the unit across your lawn. The listing confirms it has no self-propelled mechanism. This design keeps the weight at 63 pounds and simplifies the internal mechanics. It works best on flat terrain where you do not need motorized assistance.
What are the overall dimensions of this mower?
The PowerSmart B8721P measures 32 inches in length, 22 inches in height, and 16 inches in width. These dimensions allow it to fit in standard garages or sheds. The compact footprint helps with storage. The 21-inch cutting deck is housed within this frame, providing a balance between maneuverability and coverage.
Does this mower have a bagging system?
Yes, the PowerSmart 21 includes a bagging function. The listing specifies bagging as a primary mowing mode. This allows you to collect clippings for a cleaner yard. You can switch between mulching, bagging, and side discharge depending on your grass conditions and maintenance preferences.
How heavy is the PowerSmart 21 gas mower?
The unit weighs 63 pounds. This weight comes from its durable all-steel deck construction. The heft provides stability during mowing but requires physical effort to push. You will need to lift it for transport or storage. The weight is a trade-off for the durability of the steel components.
What color is the PowerSmart B8721P?
The mower is finished in bright red. This color makes the machine highly visible in the grass or when stored in a dim garage. The listing explicitly states the color as bright red. It is a standard aesthetic choice for many power equipment brands.
Is this mower suitable for large lawns?
This model is best for small lawns and manual mowing. The push design requires you to provide all the forward motion. This can be tiring on larger properties. The 21-inch deck is efficient for moderate areas, but the lack of self-propulsion makes it less ideal for expansive yards.
Can I use this mower in a garden?
Yes, the PowerSmart 21 is listed for use in yards, gardens, and lawns. The 21-inch width allows it to navigate between garden beds if space permits. The push mechanism gives you precise control over speed. This is helpful when maneuvering around delicate plants or tight corners in a garden setting.