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PowerSmart

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
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Availability: Only 4 left in stock, order soon!
Fulfilled by Amazon
Arrives Saturday, Jun 13
Order within 8 hours and 17 minutes
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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


Smart Home Compatibility: Not Smart Home Compatible


Brand Name: PowerSmart


Model Number: B8721S1


Required Assembly: Yes


UPC: 840432707746


Manufacturer: PowerSmart


Manufacturer Part Number: B8721S1


Unit Count: 1.0 Count


Item Type Name: Gas Lawn Mower


Material Type: Alloy Steel


Power Source: Gas Powered


Operation Mode: Automatic


Smart Home Compatibility: Not Smart Home Compatible


Maximum Adjustable Cutting Height: 1 Inches


Minimum Adjustable Cutting Height: 1 Inches


Number of Positions: 6


Item Weight: 70 Pounds


Cutting width: 21 Inches


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


Color: Red


Style Name: Self-propelled


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Jun 13

This item is non-returnable:

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

View our full returns policy here.

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Learn more about financing & leasing here.

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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.
    • 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
    • Not my favorite Not my favorite
Review Image by Mary B
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. (Used a zip tie) 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. Customer service did respond via email. **UPDATE: about 5th time mowing, the left side rear wheel broke and fell off!! I would NOT recommend this mower. ... show more
Reviewed in the United States on April 8, 2025 Reviewed in the United States on April 8, 2025 by Mary B
    • 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
    • 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 .
    • 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

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