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Deal.ai › PowerSmart
PowerSmart
PowerSmart Self Propelled Gas Lawn Mower 21-Inch with Briggs and Stratton E550 140cc Engine 2-in-1 Mulch and Bagger B8721S1

PowerSmart Self Propelled Gas Lawn Mower 21-Inch with Briggs and Stratton E550 140cc Engine 2-in-1 Mulch and Bagger B8721S1

Best price now

$389.99at AmazonChecked Nov 12

35% under what the other stores charge

Compared across 3 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. As an Amazon Associate, Deal.ai earns from qualifying purchases.

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Price facts

  • Last seen at $389.99 at Amazon on Nov 12.
  • Checked at 3 stores.

Our take on the PowerSmart Self Propelled Gas Lawn Mower 21-Inch with Briggs and Stratton E550 140cc Engine 2-in-1 Mulch and Bagger B8721S1

The PowerSmart B8721S1 is a 21-inch gas walk-behind mower with rear-wheel drive and a Briggs and Stratton E550 140cc engine. It mulches or bags into a 1.4-bushel rear bag, and the deck height adjusts across six positions at the rear wheels. The rear-wheel drive and 10-inch rear wheels give it an edge on slopes over front-wheel-drive mowers at the same size, though at 61 pounds it is heavier to push and turn. It suits homeowners with a mid-size lawn who want a simple gas mower with a known engine brand.

Best forHomeowners with a mid-size lawnSloped or uneven yardsBuyers who want a familiar engine brandMulching and bagging in one mower
Pros
  • Rear-wheel drive for traction on inclines
  • Briggs and Stratton E550 engine with Prime 'N Pull starting
  • 21-inch stamped steel deck
  • 2-in-1 mulch and bag with a 1.4-bushel rear bag
  • Six-position height adjustment at the rear wheels
  • 10-inch rear wheels for stability
Cons
  • 61 pounds makes it heavy to push and turn
  • Rear-wheel drive takes practice to maneuver around tight corners
  • Assembly required out of the box
  • No side discharge
  • Single-lever height adjustment is at the rear wheels only

PowerSmart Self Propelled Gas Lawn Mower 21-Inch with Briggs and Stratton E550 140cc Engine 2-in-1 Mulch and Bagger B8721S1 prices at every store

  • YardBunnyNew

    In stockReturn policy

    $600.59Checked Nov 12
    Visit YardBunny
  • GREENMENTNew

    In stockReturn policy

    $624.99Checked Nov 12
    Visit GREENMENT
  • AmazonNew

    Availability unknown

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

    $389.99Free shippingChecked Nov 12
    Visit Amazon

Store links may earn us a commission.

PowerSmart Self Propelled Gas Lawn Mower 21-Inch with Briggs and Stratton E550 140cc Engine 2-in-1 Mulch and Bagger B8721S1 price history

Lowest price we've seen: $389.99 on Nov 12 at Amazon. Tracked across 1 store since Nov 12.

About the PowerSmart Self Propelled Gas Lawn Mower 21-Inch with Briggs and Stratton E550 140cc Engine 2-in-1 Mulch and Bagger B8721S1

This is a gas-powered, self-propelled lawn mower with a 21-inch cutting width. It uses a USA-made Briggs and Stratton E550 140cc engine with a Prime 'N Pull system for easy starting.

The 21-inch deck is seamless stamped steel, and the heavy-duty blade cuts grass into small clippings. The mower works as a 2-in-1 mulcher and bagger. The 1.4-bushel rear bag collects clippings for cleanup or composting and is easy to empty.

Rear-wheel drive gives traction on inclines and uneven terrain. The wheels are 7 inches at the front and 10 inches at the rear. Cutting height is set with a 6-position rear wheel adjustment.

Brand
PowerSmart
Model
B8721S1
Power source
Gas powered
Engine
Briggs and Stratton E550, 140cc
Starting
Prime 'N Pull system
Cutting width
21 inches
Deck
Seamless stamped steel
Drive
Self-propelled, rear wheel drive
Cutting modes
2-in-1 mulch and bag
Bag capacity
1.4 bushel, rear bag
Height adjustment
6 positions, rear wheel adjustment
Wheel size
7 in. front, 10 in. rear
Material
Alloy steel
Color
Red
Operation mode
Automatic
Weight
61 pounds
Dimensions
60.2"D x 22.6"W x 37.8"H
Assembly
Required

Questions and answers

Is the PowerSmart B8721S1 self-propelled?
Yes. It is rear-wheel drive, so the rear wheels pull the mower, which helps on slopes and uneven ground.
Does it mulch and bag?
Yes. It is a 2-in-1 mower: mulch clippings back into the lawn or collect them in the 1.4-bushel rear bag. There is no side discharge.
What engine does it use?
A Briggs and Stratton E550 140cc engine with the Prime 'N Pull starting system.
How wide is the cut?
21 inches, with a stamped steel deck and a heavy-duty blade.
How do I change the cutting height?
There are six height positions, adjusted at the rear wheels.
Does it need assembly?
Yes. Some assembly is required before first use, typically the handle and bag.
Where is the PowerSmart Self Propelled Gas Lawn Mower 21-Inch with Briggs and Stratton E550 140cc Engine 2-in-1 Mulch and Bagger B8721S1 cheapest?
At Amazon, for $389.99, 35% under what the other stores charge, as of our latest check.
Where can I buy the PowerSmart Self Propelled Gas Lawn Mower 21-Inch with Briggs and Stratton E550 140cc Engine 2-in-1 Mulch and Bagger B8721S1?
3 stores we checked sell it, including YardBunny, GREENMENT, Amazon.

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