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Amerisun 21-Inch Gas Self-Propelled Lawn Mower with 144cc 4-Cycle Engine

Amerisun 21-Inch Gas Self-Propelled Lawn Mower with 144cc 4-Cycle Engine

Best price now

$349.99at Lowe'sObserved Nov 5, 2026, 6:38 PM

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Our take on the Amerisun 21-Inch Gas Self-Propelled Lawn Mower with 144cc 4-Cycle Engine

The Amerisun 21-Inch is a gas self-propelled walk-behind mower with a 144cc 4-cycle engine and a rotary blade under a 21-inch deck. It covers a typical suburban lawn at a walking pace without pushing, and the 21-inch cut keeps mowing time down on quarter-acre lots. At $349.99 at Lowe's as of November 5, 2026, it sits at the low end of what self-propelled gas mowers cost; only one store prices it new, so there is no discount to wait for.

Best forHomeowners with up to about a quarter acre of lawnBuyers who want self-propelled gas mowing on a budgetFlat to gently sloped yardsReplacing an old push mower
Pros
  • Self-propelled drive takes the pushing out of mowing
  • 21-inch deck cuts wide, so fewer passes
  • 144cc 4-cycle engine runs on plain gasoline with no oil mixing
  • Simple rotary blade design that is easy to sharpen or replace
  • $349.99 at Lowe's as of November 5, 2026 is cheap for a self-propelled gas mower
Cons
  • Single-store availability limits price comparison and backup options
  • Gas engine means fuel storage, oil changes and seasonal maintenance
  • No electric start or drive-speed details listed, so expect a pull start
  • 21-inch deck is tight in narrow gates and crowded beds

Amerisun 21-Inch Gas Self-Propelled Lawn Mower with 144cc 4-Cycle Engine prices at every store

  • Lowe'sNew

    In stock

    $349.99Observed Nov 5, 2026, 6:38 PM
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Amerisun 21-Inch Gas Self-Propelled Lawn Mower with 144cc 4-Cycle Engine price history

Lowest price we've seen: $349.99 on Nov 5 at Lowe's. Tracked across 1 store since Nov 5.

Specifications

Power Source
Gas
Blade System
Rotary
Cutting Width
21″ deck

Questions and answers

Is $349.99 a good price for this mower?
It is a low price for a self-propelled gas mower with a 21-inch deck. Only one store, Lowe's, prices it new as of November 5, 2026, so there is no competing price to beat it.
What size lawn is a 21-inch mower good for?
A 21-inch deck suits lots up to about a quarter acre. Larger lawns are faster with a wider deck or a riding mower.
Does the 144cc engine need oil mixed with gas?
No. It is a 4-cycle engine, so you fill the fuel tank with gasoline and keep oil in the crankcase separately.
Is it self-propelled or do I push it?
It is self-propelled, so the drive pulls the mower forward and you steer. Expect a pull-start cord unless the listing says otherwise.
What comes in the box?
Typically the mower, a grass bag or discharge chute, and an owner's manual. Check the Lowe's listing for the exact included attachments before buying.
When is it cheapest?
Spring mower promotions and end-of-season clearance are the usual windows for lower prices. With one seller, watch Lowe's price directly rather than comparing stores.
Where is the Amerisun 21-Inch Gas Self-Propelled Lawn Mower with 144cc 4-Cycle Engine cheapest?
At Lowe's, for $349.99, as of our latest check.

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