PowerSmart
PowerSmart V8721S1 21-Inch 170cc Gas Self-Propelled Lawn Mower
Score
The PowerSmart V8721S1 is a 21-inch gas self-propelled lawn mower built for homeowners who want more help moving across medium lawns, mild slopes, and thicker grass. It combines a 170cc OHV engine, rear-wheel drive, a steel deck, and three clipping options in one walk-behind mower.
Why it stands out
- 170cc OHV gas engine for regular residential mowing tasks
- 21-inch cutting width helps reduce the number of passes
- Self-propelled rear-wheel drive supports easier movement on uneven ground
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Score Breakdown
Best For
It is best for shoppers who want a gas mower with self-propelled drive, a wider 21-inch cutting path, and flexible clipping control for bagging, mulching, or rear discharge.
Tradeoffs to note
- Less compact than smaller push mowers for tight storage spaces
Why We Like It
We like this PowerSmart mower because it covers the core needs of a practical gas walk-behind mower: a 170cc engine, 21-inch cutting width, 1.5-inch to 3.9-inch cutting height range, and 3-in-1 clipping management. The rear-wheel-drive self-propelled system is especially useful if your yard has slopes or uneven patches.
What Buyers Notice
Public buyer feedback commonly points to easy assembly, helpful self-propelled movement, and strong cutting performance for typical home lawns. As with most gas mowers, buyers should read the setup and maintenance instructions before first use.
Who Should Buy It
Buy this mower if you want a 21-inch gas mower with self-propelled drive, a 170cc engine, and multiple clipping options for a medium-size yard. It is a good fit for shoppers who value cutting flexibility and easier movement more than ultra-lightweight storage.
Detailed Review
Design and mowing setup: The PowerSmart V8721S1 is designed as a practical gas mower for homeowners who want more power and less pushing effort than a basic manual mower. Its 21-inch deck is wide enough for medium lawns, while the self-propelled rear-wheel drive helps the mower move forward with less strain.
Cutting performance: The 170cc OHV engine and steel cutting deck give it the foundation needed for regular yard work. The cutting height adjusts from 1.5 inches to 3.9 inches, so users can cut lower for a cleaner finished look or leave grass taller during warmer weather.
Clipping options: The 3-in-1 mowing system is a major advantage. Bagging is useful when you want a tidy lawn, mulching returns finer clippings to the grass, and rear discharge helps when you want to mow more quickly without stopping to empty the bag as often.
Everyday usability: Rear-wheel drive and larger rear wheels make this mower easier to manage on mild slopes and uneven areas than a standard push mower. It is still a gas mower, so it needs normal engine care, but for buyers who prefer gas power, the feature mix is well matched to regular residential mowing.
FAQ
Is the PowerSmart V8721S1 self-propelled?
Yes. It uses a self-propelled rear-wheel-drive system to help move the mower forward while you guide it.
What cutting options does it support?
It supports bagging, mulching, and rear discharge, so you can choose how to handle grass clippings.
What is the cutting width?
The mower has a 21-inch cutting width, which is suitable for many medium residential lawns.
How many cutting heights does it have?
It has six cutting-height positions with a listed range from 1.5 inches to 3.9 inches.
Is this a good choice for slopes?
The rear-wheel-drive self-propelled system and larger rear wheels make it better suited to mild slopes and uneven ground than many basic push mowers.


