PowerSmart 21-Inch Gas Self-Propelled Lawn Mower

The PowerSmart 21-Inch Gas Self-Propelled Lawn Mower is built for homeowners managing medium-to-large properties up to 1/2 acre who want to reduce the physical effort of yard maintenance. Powered by a 170cc overhead valve (OHV) gas engine, it features an auto-choke system designed to deliver quick starts in one to two pulls without manual priming hassle.

Its 21-inch heavy-gauge alloy steel deck provides wide, corrosion-resistant cutting passes through thick grass. Handling uneven terrain or sloped lawns is straightforward thanks to the rear-wheel drive system paired with 10-inch rear wheels, which supply traction so you can guide the machine rather than push its entire weight.

Yard cleanup adapts quickly to different grass conditions through its 3-in-1 setup. You can mulch clippings back into the turf, use the rear discharge for taller growth, or collect clippings in the included 1.4-bushel bag without needing tools. High-stress points like the rear guard and discharge chute use reinforced structural parts for repeated forward and reverse use, and the handle folds completely flat to cut down garage floor storage by up to 70 percent.

As a gas mower, it relies on a standard pull cord rather than an electric push button, though the auto-choke simplifies the starting process. The 1.4-bushel collection bag is also fairly modest, meaning you may need to empty it more frequently when bagging large, overgrown properties.

Verdict: This walk-behind mower is a solid match for homeowners with up to half-acre yards featuring hills or thick grass. If you want self-propelled assistance, durable steel construction, and compact vertical storage, it provides dependable power without unnecessary complexity.

• Engine Displacement: 170cc OHV
• Deck Width: 21 inches
• Deck Material: Heavy-gauge alloy steel
• Drive Type: Self-propelled rear-wheel drive
• Rear Wheel Size: 10 inches
• Grass Bag Capacity: 1.4 bushels
• Yard Size Rating: Up to 1/2 acre
• Discharge Options: 3-in-1 (Mulch, Bag, Rear Discharge)

A great fit if you:

• Mow yards up to 1/2 acre with sloped, rolling, or uneven terrain.
• Want rear-wheel drive assistance to avoid manually pushing through thick grass.
• Need versatile cutting options, including mulching, bagging, and rear discharging.
• Have limited garage space and need a mower that stores vertically.

Consider something else if you:

• Prefer push-button electric start over a manual pull-cord system.
• Need a high-capacity collection bag to avoid frequent emptying on large lawns.

How does this mower handle slopes and uneven yards?
It features a self-propelled rear-wheel drive system combined with 10-inch rear wheels that grip the turf to propel the mower forward on inclines.

What yard sizes is this mower designed for?
The 21-inch cutting deck and 170cc engine are rated for medium-to-large yards up to 1/2 acre.

Do you need tools to switch between bagging and mulching?
No. The 3-in-1 system lets you change between mulching, rear-discharge, and the 1.4-bushel collection bag without any tools.

How is the mower stored when not in use?
The handle folds flat without tools, allowing the mower to stand upright for vertical storage and saving up to 70 percent of garage floor space.