Shop
  • Deals
  • Deal checker
  • Black Friday
  • Buying guides
  • Brands
  • Stores
Travel
  • Flight deals
  • Hotel deals
Company
  • Research
  • Press
  • deal.ai apps
Black Friday 2026
  • Walmart
  • Best Buy
  • Target
  • TVs
  • Laptops
  • Headphones
  • Apple
  • Gaming
  • Vacuums
  • Kitchen
  • Toys
  • Smartwatches
  • Tablets
  • Furniture
  • Mattresses
© Deal.ai Inc.
TermsPrivacy
Deal.ai › PowerSmart
PowerSmart
PowerSmart Gas Push Lawn Mower 21"

PowerSmart Gas Push Lawn Mower 21"

Best price now

$249.99at PowerSmartObserved at 10:06 AM

Compared across 5 stores. Prices are checked against each store and labelled with when.

Visit PowerSmart

Ask our agent about this product

It checks today's price at every store, compares the alternatives and answers in about a minute.

Enter to send, Shift+Enter for a new line

Our take on the PowerSmart Gas Push Lawn Mower 21"

The PowerSmart B8721C is a 21-inch gas walk-behind mower with a 144cc Briggs & Stratton engine, a recoil starter with auto choke, and a heavy-duty steel deck. It cuts three ways (mulch, side discharge, bag) with a 6-position height range of 1.5 to 3.9 inches, and it is a push model, not self-propelled. At $249.99 at PowerSmart as of November 8, 2026, it is the best new price among the 5 stores that carry it.

Best forSmall to mid-size flat lawnsBuyers who want a simple gas mower without self-propel complexityMulching and side-discharge usersMowing around garden beds and tight spaces
Pros
  • 144cc Briggs & Stratton engine with auto choke starts easily, usually on the first pull
  • Steel 21-inch deck handles high grass without bogging down
  • 3-in-1 cutting: mulch, side discharge and bag
  • 6-position height adjustment from 1.5 to 3.9 inches
  • About 60 lb, light enough to push and turn around obstacles
  • 95% pre-assembled out of the box
Cons
  • Push only: no self-propel or cruise control, so hills take effort
  • Recoil pull start, no electric start
  • Assembly instructions are vague about where the pull cord routes
  • No bag included in the box, only the side discharge chute
  • Basic steel deck and manual controls, no premium features

PowerSmart Gas Push Lawn Mower 21" prices at every store

  • PowerSmartNew

    In stock

    $249.99Free shippingObserved at 10:06 AM
    Visit PowerSmart
  • WalmartNew

    In stockSold by DOBEST

    $259.99Free shippingObserved at 10:04 AM
    Visit Walmart
  • Martexplore.comNew

    In stock

    $337.49Free shippingObserved at 10:04 AM
    Visit Martexplore.com
  • eBayNew

    In stock

    $370.00+ $64.00 shippingObserved at 10:04 AM
    Visit eBay
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $269.99Free shippingObserved at 10:06 AM
    Visit Amazon

Also available at

  • FlamesLuxCheck price at FlamesLux
  • Smart Cart02Check price at Smart Cart02

Store links may earn us a commission.

PowerSmart Gas Push Lawn Mower 21" price history

Lowest price we've seen: $249.99 on Nov 8 at PowerSmart. Tracked across 5 stores since Nov 8.

What reviewers say

Buyers describe easy starting, usually on the first pull, and a strong motor that does not bog down in tall grass. They also call it easy to assemble, use and clean, and say it is quieter and mulches better than their previous mower. The main complaint is vague assembly instructions on where the pull cord goes.

What people mention
  • StartingPraisedOwners say the auto-choke engine usually fires on the first pull.
  • Cutting powerPraisedReviewers report the 144cc engine does not bog down in tall grass.
  • SetupMixedAssembly is quick and mostly done, but the instructions are vague on pull cord placement.
  • NoisePraisedBuyers say it runs quieter than their previous mower.
  • MulchingPraisedOwners say mulching works better than on their old mower and leaves a clean cut.
  • Push effortCriticisedWith no self-propel, pushing on slopes and thick grass takes more effort.

From PowerSmart

  • Powerful 144cc engine with recoil start and auto choke for easy starting
  • Durable 21" heavy-duty all-steel deck with precision blade for a clean, even cut
  • 2-in-1 mowing system: mulching and side discharge
  • 6-position cutting height adjustment from 1.5" to 3.9"
  • 95% pre-assembled for quick and simple setup
  • Lightweight push design for easy maneuvering
Materials
Heavy-duty all-steel deck
Guarantee
Backed by a 2-year warranty and responsive customer service.
Returns
30-Day Returns
Shipping
Free Shipping
In the box
Side discharge chute, 2 cable clips, User manual

About the PowerSmart Gas Push Lawn Mower 21"

Brand: PowerSmart

Color: Black

Features:

• Powerful 4-Stroke OHV B&S Engine‌: Equipped with a reliable B&S 144cc engine, this mower delivers consistent and efficient cutting performance, ensuring your lawn is always in pristine condition.

• Versatile 3-in-1 Mulching & Side Discharge‌: Choose between mulching to enrich your lawn's soil or side discharging for a clean, even cut. This dual functionality gives you the flexibility to tailor your lawn care to your specific needs.

• Effortless Maneuverability & Lightweight Design‌: Weighing in at just 62 lbs, this PowerSmart push lawn mower is a breeze to handle, making it perfect for navigating tight spaces and maneuvering around garden obstacles with ease.

• Customizable Cutting Height with 6-Position Adjustment‌: Tailor your lawn's look with 6-position height adjustment, ranging from 1.5 to 3.9 inches. Achieve the perfect cut and finish for your lawn, whether you prefer a short, neat look or a lush, full appearance.

• Safety Features: Includes essential safety features such as a start/stop control lever, safety shields, and clear safety instructions to prevent accidents and injuries.

Binding: Lawn & Patio

model number: B8721C

Part Number: v8721p

EAN: 0840432710791

Package Dimensions: 32.9 x 22.6 x 16.5 inches

What buyers say

Buyers like
  • Easy start, usually on the first pull
  • Strong motor doesn't bog down in high grass
  • Easy to assemble
  • Easy to use and easy to clean
  • Quieter than previous mower
  • Mulching operation better than previous mower; clean cut
Buyers complain about
  • Assembly instructions vague on starting pull cord placement

Specifications

Mower Type
Walk Behind
Power Source
Gas
Start Type
Recoil starter
Drive Type
Push
Self Propelled
No
Cruise Control
No
Cutting Width
20.5 inch
Bagging

Questions and answers

Is the PowerSmart B8721C self-propelled?
No. It is a push mower with no drive system or cruise control, so you supply the pushing effort, especially on slopes.
Does it come with a bag?
The box includes the side discharge chute, two cable clips and a manual. Bagging is supported, but a bag is not listed in the box, so check before you buy if bagging matters to you.
What engine does it use?
A 144cc Briggs & Stratton 4-stroke OHV engine rated at 6 HP, with a recoil starter and auto choke.
How low and high can it cut?
Six positions from 1.5 to 3.9 inches, adjusted at the deck.
Is $249.99 a good price?
It is the best new price among the 5 stores that carry it as of November 8, 2026, at PowerSmart. Compare against the other stores' listings before buying.
How much assembly is needed?
It ships 95% pre-assembled. Buyers say setup is quick, though the instructions are unclear on where the pull cord routes.
Where is the PowerSmart Gas Push Lawn Mower 21" cheapest?
At PowerSmart, for $249.99, as of our latest check.
What do buyers say about the PowerSmart Gas Push Lawn Mower 21"?
Buyers like: Easy start, usually on the first pull; Strong motor doesn't bog down in high grass; Easy to assemble. Common complaints: Assembly instructions vague on starting pull cord placement.
Where can I buy the PowerSmart Gas Push Lawn Mower 21"?
7 stores we checked sell it, including PowerSmart, Amazon, Walmart, Martexplore.com, eBay.

Shoppers also compared

  • T
    Troy-Bilt 21 140cc Gas Walk-Behind Push Mower TB120
    Troy-Bilt 21 140cc Gas Walk-Behind Push Mower TB120
  • P
    PowerSmart 144cc 18" Gas Push Lawn Mower
    PowerSmart 144cc 18" Gas Push Lawn Mower
  • Y
    YARDMAX 21 in. 170cc 3-in-1 Gas Walk Behind Push Lawn Mower with High Rear Wheels
    YARDMAX 21 in. 170cc 3-in-1 Gas Walk Behind Push Lawn Mower with High Rear Wheels
  • T
    Troy-Bilt 21 in 140cc Gas-Powered Push Lawn Mower
    Troy-Bilt 21 in 140cc Gas-Powered Push Lawn Mower
  • 1
    17" 144cc Gas Push 3-in-1 Lawn Mower DV8618P/V8617P
    17" 144cc Gas Push 3-in-1 Lawn Mower DV8618P/V8617P
  • M
    Murray 21 in. 140 cc Briggs and Stratton Walk Behind Gas Push Lawn Mower with Height Adjustment and with Mulch Bag
    Murray 21 in. 140 cc Briggs and Stratton Walk Behind Gas Push Lawn Mower with Height Adjustment and with Mulch Bag
  • 2
    21 Inch Gas Push Lawn Mower with 144cc 4
    21 Inch Gas Push Lawn Mower with 144cc 4
  • T
    Toro 21486 22in Recycler Max with SmartStow Gas Push Lawn Mower
    Toro 21486 22in Recycler Max with SmartStow Gas Push Lawn Mower

Stores we've priced the PowerSmart Gas Push Lawn Mower 21" at

  • Walmart deals and prices

More from PowerSmart

  • P
    PowerSmart 4400-Watt Gas Portable Inverter Generator
    PowerSmart 4400-Watt Gas Portable Inverter Generator
  • P
    Powersmart 24 in. Two Stage Electric Start Gas Snow Blower
    Powersmart 24 in. Two Stage Electric Start Gas Snow Blower
  • P
    PowerSmart 26-in Two-stage Self-propelled Gas Snow Blower
    PowerSmart 26-in Two-stage Self-propelled Gas Snow Blower
  • P
    Powersmart 26" 2-Stage 212cc Self Propelled Gas Snow Blower
    Powersmart 26" 2-Stage 212cc Self Propelled Gas Snow Blower
  • P
    PowerSmart 4400W/4000W Gasoline/Propane Duel Fuel Inverter Generator w/ CO Alert MB5040DC
    PowerSmart 4400W/4000W Gasoline/Propane Duel Fuel Inverter Generator w/ CO Alert MB5040DC
  • P
    PowerSmart 20V Brushless Cordless Impact Wrench Kit with Battery & Charger PS76142B
    PowerSmart 20V Brushless Cordless Impact Wrench Kit with Battery & Charger PS76142B
  • P
    PowerSmart DB5068 3800W Inverter Gas Generator
    PowerSmart DB5068 3800W Inverter Gas Generator
  • P
    PowerSmart 4800W Gas Powered Inverter Generator
    PowerSmart 4800W Gas Powered Inverter Generator
All PowerSmart deals and products →
Yes
Cutting Height Options
6-position
Maximum Cutting Height
3.9 inch
Minimum Cutting Height
1.5 inch
Mulching
Yes
Side Discharge
Yes
Engine Horsepower
6 HP
Engine Displacement
144 cc
Engine Type
Gas
Cylinders
1
Deck Material
All-steel
Deck Size
21"
Overall Dimensions
33.3 x 22.7 x 16.4 inches (Package Dimensions)
Weight
60 lb
Blade System
Side-discharge, Mulching
Blade Material
Specialized blade