Search  for anything...

PowerSmart 21-Inch Self-Propelled Lawn Mower - 140cc B&S Engine, 3-in-1 Mulching, 6 Cutting Heights, Heavy-Duty Steel Deck

  • Based on 16 reviews
Condition: New
Checking for inventory...

Notify me when this product is back in stock

$379.99 Why this price?
Holiday Deal · 5% off was $399.99

Buy Now, Pay Later


As low as / mo
  • – Up to 36-month term if approved
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.


Availability: Unavailable
Fulfilled by Amazon
Available payment plans shown during checkout

Style: Self-propelled


Features

  • HIGH-PERFORMANCE ENGINE: The 140cc BS EX550 Briggs & Stratton engine delivers reliable power for efficient grass cutting, while the auto choke ensures quick and easy starts.
  • HEAVY-DUTY STEEL DECK: The 21-inch steel cutting deck is designed for long-lasting performance and efficient mowing, even on large lawns.
  • 3-IN-1 LAWN CARE SYSTEM: Switch between mulching, bagging, and side discharge modes to meet your specific lawn care needs.
  • 6 CUTTING HEIGHT OPTIONS: With 6 adjustable cutting heights, you can easily tailor your mowing to suit different grass types and conditions.
  • SELF-PROPELLED CONVENIENCE: The self-propelled feature makes mowing effortless, especially on hills or large yards, saving you time and energy.

Brand: PowerSmart


Power Source: Gas Powered


Material: Alloy Steel


Color: Red


Style: Self-propelled


Item Weight: 70 Pounds


Cutting Width: 21 Inches


Operation Mode: Automatic


Product Dimensions: 29.5"D x 16.5"W x 20"H


UPC:


Brand: PowerSmart


Power Source: Gas Powered


Material: Alloy Steel


Color: Red


Style: Self-propelled


Item Weight: 70 Pounds


Cutting Width: 21 Inches


Operation Mode: Automatic


Product Dimensions: 29.5"D x 16.5"W x 20"H


UPC: 840432707746


Minimum Adjustable Cutting Height: 1 Inches


Manufacturer: PowerSmart


Item Weight: 70 pounds


Item model number: B8721S1


Frequently asked questions

This product is currently out of stock. Please check back later for shipping info.

This item is non-returnable:

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Get the Briggs motor
completely assembled just fold out handle, lock in place. Fill with supplied oil and your own gas. Pull cord, starts first time every time. Height adjust with one lever. Definitely happy so far.
Reviewed in the United States on February 22, 2025 by euroconec

  • Awful.
The settings can’t be adjusted past the 3rd notch because it rubs the wheel. The self propelled part didn’t work. It stopped working completely after being used for less than 30 minutes, and I had to call. Was refunded, but had to dispose of the mower. Truly awful.
Reviewed in the United States on August 28, 2025 by Amber W.

  • Not my favorite
Very easy to put together as only had to tighten some bolts. 1) There is no gas primer pump button. Fortunately it started without priming. 2) The cutting height adjustment lever slid down to lower grooves the entire time I mowed. Very annoying and took out a big chunk of grass down to the dirt. I'll have to figure out a way to secure it. 3) The self- propelling handle is under the handle and it became difficult to hold it in place. My previous mower it was on top of the handle and easier to keep it engaged. A top handle lever is the on and off on this mower. Fortunately I do not have to push mow my entire yard as I have a rider because it was too hard to keep engaged the entire time. The cut was fine. I reached out to their customer service so will wait to see if a response. ... show more
Reviewed in the United States on April 8, 2025 by Mary B

  • Powerful Mower
This mower runs great and powers thru tall grass. The lever to control the height of all wheels simultaneously is a deal maker.
Reviewed in the United States on January 29, 2025 by The Cajun

  • Lawnmower
I am enjoying it. I love how it starts with no problems
Reviewed in the United States on January 1, 2025 by Christina palmer

  • Tall grass and no way to mow it
The start/start cord self propel broke less than one month. Customer service is very lacking in response. I wouldn't buy this product again.
Reviewed in the United States on June 23, 2025 by .

  • Get an extended warranty
It was good actually great for 2 mows the the drive wheels stopped working that's all I know now more later
Reviewed in the United States on May 18, 2025 by kyle michalak

  • Inaccurate product description
Product description was not accurate. The mower is not designed for side discharge as was indicated. We live in the country and do not like bagging or mulching options.
Reviewed in the United States on January 2, 2025 by John Zacek

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for inventory...