PowerSmart 21-Inch Gas Lawn Mower with B&S Engine, 3-in-1 (Bag/Mulch/Rear Discharge), Self-Propelled, 6 Cutting Heights, Durable Steel Deck, Rear-Wheel Drive
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$389.00
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At a glance
- Condition
- New
- Style
- 140CC B&S EX550 Self Propelled
- Model
- B8721S2
- Dimensions
- 32.9"D x 16.5"W x 22.6"H
- Weight
- 31.75 kg
- Color
- Black，red
- Material
- Alloy Steel
Features 5
- 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 durabilityideal for tough mowing jobs.
- 21-INCH CUTTING WIDTH FOR HIGH EFFICIENCY: The robust steel deck covers a wide 21-inch path, reducing mowing time and making it perfect for medium to large yards.
- 3-IN-1 FUNCTION: BAGGING, MULCHING & REAR DISCHARGE: Switch easily between modes: collect clippings in the 1.4-bushel bag, mulch to nourish your lawn, or rear-discharge for quick and efficient mowing.
- 6-POSITION HEIGHT ADJUSTMENT: Quickly adjust the cutting height from 1.5"" to 3.9"" with a single lever to match grass length, season, or preferred lawn look.
- SELF-PROPELLED WITH LARGE REAR WHEELS: Rear-wheel drive and 10"" large rear wheels offer excellent traction and maneuverability on slopes or uneven terrain.
Specs 15
| Brand | PowerSmart |
|---|---|
| Power Source | Gas Powered |
| Material | Alloy Steel |
| Color | Black，red |
| Style | 140CC B&S EX550 Self Propelled |
| Item Weight | 31.75 Kilograms |
| Cutting Width | 21 Inches |
| Operation Mode | Manual |
| Product Dimensions | 32.9"D x 16.5"W x 22.6"H |
| Assembly Required | Yes |
| UPC | 840432709832 |
| Maximum Adjustable Cutting Height | 3.9 Inches |
| Minimum Adjustable Cutting Height | 1.5 Inches |
| Manufacturer | PowerSmart |
| Item model number | B8721S2 |
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This item is non-returnable:
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
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Top Amazon Reviews
The quality of the product and how well it works
Style: 21in Gas 125CC B&S
Bought this lawnmower for my son and he absolutely loves it so therefore that makes me very happyI’m
Reviewed in the United States on October 30, 2025 by Robin Cundiff
Malfunction or bad design?
Style: 140CC B&S EX550 Self Propelled
Worked great for a few months, then oil tank exploded out of nowhere, we always check for oil levels and refill appropriately but one day it decided to just burn out and explode. You can see the metal piece that blew out in the picture. The fresh oil turned black too. Edit: Contacted Amazon support and was told I would have to go through manufacturer for Warranty, contacted manufacturer and was told they weee only supplier not seller thus I have to contact Amazon not them. Basically everyone is trying to dodge the ball and warranty is not being honored. I am utterly disappointed and angry really. If I could give it 0 stars I would.
...
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Reviewed in the United States on October 10, 2025 by Jessika L. Jessika L.
Been great so far.
Style: 140CC B&S EX550 Self Propelled
We needed a mower quick as our grass was growing and our other mower just died on us. This came quickly, was easy to assemble, and starts on the first try every time. The self-propel is powerful and will take off on you if you aren’t prepared. I wish it would get just a bit lower but it does a nice job. I do feel like the gas tank is a bit smaller than some others.
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Reviewed in the United States on September 29, 2025 by Blondyash
Nice For The Price MOWER!
Style: 140CC B&S EX550 Self Propelled
Easy to set up! Comes with oil and manual. Good price-Briggs&Stratton power, bag AND SELF-Propelled. Second pull usually starts it and it’s a nice mower. It’s getting so mowers just don’t last very long anymore, too bad. I’ll see how this one works. Follow instructions, splash a tablespoon of 2-cycle oil in the spark plug hole, start it for a minute then turn it off. The rings need to seal.
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Reviewed in the United States on August 10, 2025 by Laurence J.
Good mower, decent quality, fair price
Style: 140CC B&S EX550 Self Propelled
This is good deals the self start no prime is good feature. Haven’t had any issue this whole summer. Simple to put together and the give you the proper amount of oil to go with it…don’t forget to put it in. The rear grass flap I guess it’s called does come a little loose but doesn’t affect the operation.
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Reviewed in the United States on September 3, 2025 by dave
Works well
Style: 140CC B&S EX550 Self Propelled
Have used it three times, works wonderful. So glad we ordered the self propelled, as we get older pushing a lawn mower gets more difficult and takes longer. Word of warning, it does take off quickly, especially if you’re not prepared, but it doesn’t take long to get used to the speed.
Reviewed in the United States on October 18, 2025 by Linda Svitavsky
DO NOT BUY!
Style: 140CC Self Propelled
DO NOT BUY !!!! ABSOLUTE JUNK - This lawnmower lasted only 11 months, with about 3 months of no use so really 8 months before the self propel drive broke. The closest service company is 80 miles away, I cannot find a repair service in my area that will touch this mower, I wonder why, so I am faced with a 160 mile roundtrip to have someone "authorized" to look at it and put in writing to the warranty department what needs to be fixed. Assuming it is then fixed I would have another 160 mile round trip to get the mower back. Poor service all the way around. Would give zero stars if that was an option.
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Reviewed in the United States on October 1, 2025 by Thomas Logan
It works perfect!
Style: 140CC B&S EX550 Self Propelled
The lawnmower works perfectly fine, good for a small yard. It came broke from the plastic base that hold the front wheel but they refunded the money. It has oils all over, nothing impossible to fix, besides that, the engine is strong and it does what’s supposed to do.
Reviewed in the United States on August 3, 2025 by Me enviaron mi laptop con un procesador inferior y el vendedor no se hizo responsable. Me enviaron mi laptop con un procesador inferior y el vendedor no se hizo responsable.