PowerSmart 21" Gas Self-Propelled Lawn Mower for Hills & Medium Yards |

The PowerSmart 21-Inch Gas Self-Propelled Lawn Mower is built to make managing slopes and uneven yards easier. Powered by a 170cc OHV engine, it delivers the necessary muscle to cut through overgrown turf without slowing down. It suits homeowners with medium-sized yards who need the extra help of self-propulsion on slopes rather than pushing a heavy machine across challenging ground.

Maneuverability and power work together thanks to rear-wheel drive and large 10-inch rear wheels. These components give the mower traction on rough terrain, letting you steer and guide the unit rather than strain yourself pushing. The 170cc engine is designed to start quickly in one or two pulls without any priming steps, keeping lawn care routines simple from the start.

The mower features a durable 21-inch alloy steel deck paired with a 3-in-1 disposal system. Out of the box, you can collect clippings in the included rear bag, finely mulch grass back into the soil, or use rear discharge for taller grass without needing any tools to switch modes. A single lever controls cutting height across six positions between 1.5 and 3.9 inches, making adjustments swift.

When it comes to trade-offs, note that while the steel deck measures 21 inches, replacement blades for this specific model are 20 inches, so you must order the correct size when replacing parts. As a gas-powered model, it also requires standard fuel handling and engine care. Additionally, the listing does not mention fuel tank capacity or overall machine weight.

Verdict: The PowerSmart 21-inch mower is an excellent choice for homeowners with sloped or uneven medium yards who want a dependable, self-propelled gas machine. Its tool-free versatility, solid steel deck, and quick-starting engine offer dependable mowing performance throughout the season.

• Engine: 170cc OHV gas engine
• Deck Material: Alloy steel
• Deck Width: 21 inches
• Replacement Blade Size: 20 inches
• Drive System: Self-propelled rear-wheel drive
• Wheel Size: 10-inch rear wheels
• Cutting Heights: 6 positions (1.5 to 3.9 inches)
• Cutting Modes: 3-in-1 (bag, mulch, rear discharge)
• Storage: Folding handle for vertical storage

A great fit if you:

• Mow yards with hills, slopes, or uneven ground that require rear-wheel drive traction.
• Want the flexibility to switch between bagging, mulching, and rear discharging without tools.
• Have limited garage floor space and need a mower that folds flat for vertical storage.
• Prefer a fast-starting gas engine that does not require priming steps.

Consider something else if you:

• Prefer an electric or battery-powered setup to avoid fuel handling.
• Have a very small, flat lawn where a standard push mower is sufficient.

What cutting height options does this mower offer?
The mower includes a single lever that adjusts the cutting deck across six different height settings ranging from 1.5 inches to 3.9 inches.

What size replacement blade does this model take?
Although the mower features a 21-inch alloy steel deck, it uses 20-inch replacement blades.

Are all the grass management attachments included?
Yes, all components for bagging, mulching, and rear discharge are included in the box and can be swapped without tools.

How does this mower help save garage space?
The handle folds flat in seconds, allowing the mower to be stored vertically and saving up to 70 percent of garage floor space.