The PowerSmart 21″ 140cc Gas Self-Propelled Lawn Mower (B8621S) is a powerful and versatile tool designed to tackle medium-sized lawns efficiently.
With a dependable Briggs & Stratton 550E engine, self-propelled functionality, and 3-in-1 cutting options (side discharge, mulching, and bagging), this mower makes lawn care both manageable and enjoyable.
It’s built for those who want a reliable, easy-to-use mower with adjustable features for various grass types and terrains.
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Who Is It For?
This mower is ideal for homeowners with small to medium-sized lawns, particularly those who require more power and versatility in their yard equipment.
If you have a yard up to ½ acre, uneven terrain, or inclines, this self-propelled mower’s rear-wheel-drive system provides the traction and ease of movement needed.
It’s also great for users looking for an environmentally friendly option, as it helps recycle grass clippings back into the soil with its mulching function.
| Already convinced? You can check the current price and availability on Powersmart’s website. |
Appearance and Design
The PowerSmart B8621S has a sleek and sturdy design. It features a 21-inch steel mowing deck, which is both durable and efficient for covering ground quickly.
The black and red color scheme gives it a modern, professional look.
The adjustable cutting height lever and 8-inch rear wheels add both practicality and ease of use to its design, making it a visually appealing and functional mower.
| Feature | Description |
|---|---|
| Cutting Width | 21 inches |
| Color | Black and Red |
| Material | Steel deck with plastic and rubber parts |
| Wheel Size | 7-inch front, 8-inch rear |
Performance
Equipped with a 140cc Briggs & Stratton engine, this mower provides ample power for most residential lawns.
Its 3-in-1 capability allows you to choose between mulching, bagging, or side discharging, giving you the flexibility to manage grass clippings however you prefer.
The self-propelled feature and rear-wheel drive allow for smooth operation even on uneven terrain, while the 6-position height adjustment lets you customize the cutting height between 1.5 and 3.9 inches for different types of grass or overgrowth.
With a large 18-gallon grass catcher, you won’t need to stop frequently to empty clippings, further improving efficiency.
User-Friendliness
This lawn mower is designed with convenience in mind.
The easy-start mechanism means you’ll get going without the frustration of repeated pulls.
The dual-lever height adjustment makes changing the cutting height a breeze, and its lightweight frame (just under 68 lbs) combined with the self-propelled feature makes it manageable for users of all strength levels.
The foldable handle also means you can store it easily, even in tighter spaces.
Durability and Quality
The steel mowing deck provides durability, while the Briggs & Stratton engine ensures a long lifespan if properly maintained.
The mower’s build is solid, and it’s designed to withstand regular use across various lawn types and conditions.
The UV-protected casing ensures the mower retains its appearance and function over time, even in harsh sunlight.
Value for Money
At around $339, this lawn mower offers good value considering its powerful engine, self-propelled feature, and versatility.
Compared to other lawn mowers in its class, it stands out for its 3-in-1 capabilities and the trusted Briggs & Stratton engine.
It’s priced competitively for those looking for reliable lawn care without breaking the bank.
| Feature | Value |
|---|---|
| Price | ~$339 |
| Warranty | 2 years |
| Cutting Width | 21 inches |
| Bag Capacity | 18 gallons |
| Height Adjustment | 6 positions (1.5” to 3.9”) |
Pros
Cons
Lawn Mower Alternatives
If you’re considering other self-propelled mowers, here are a few options that compare in terms of features, power, and price.
The table below provides a quick comparison between the PowerSmart B8621S and two popular alternatives: Troy-Bilt TB200, and Honda HRN216VKA.
| Feature | PowerSmart B8621S | Troy-Bilt TB200 | Honda HRN216VKA |
|---|---|---|---|
| Engine | 140cc Briggs & Stratton | 140cc Briggs & Stratton | 167cc Honda GCV |
| Cutting Width | 21 inches | 21 inches | 21 inches |
| Self-Propelled | Yes (rear-wheel drive) | Yes (front-wheel drive) | Yes (variable speed) |
| 3-in-1 Functionality | Mulching, bagging, side discharge | Mulching, bagging, side discharge | Mulching, bagging, side discharge |
| Cutting Height Adjustments | 6 positions (1.5″ to 3.9″) | 6 positions | 7 positions |
| Grass Catcher Capacity | 18 gallons (1.4 bushels) | 18 gallons | 17 gallons |
| Weight | 67.68 lbs | 78 lbs | 89 lbs |
| Price Range | ~$339 | ~$409 | ~$599 |
| Warranty | 2 years | 2 years | 3 years |
Key Differences:
- Engine Power: The Honda HRN216VKA stands out with a more powerful 167cc engine, making it better suited for tougher mowing tasks, though it’s also significantly more expensive.
- Drive Type: The PowerSmart B8621S and Honda models have rear-wheel drive, which offers better traction on slopes, while Troy-Bilt feature front-wheel drive.
- Price: PowerSmart is the most affordable option at around $339, whereas the Honda HRN216VKA is priced much higher, reflecting its premium features and build quality.
- Weight: The PowerSmart is one of the lightest options, making it easier to handle, especially for smaller users.
If you’re looking for something more affordable with solid performance, the PowerSmart B8621S is a great value option.
Conclusion / Overall Opinion
The PowerSmart B8621S is a great choice for homeowners seeking a powerful, self-propelled gas mower with multiple cutting options.
Its Briggs & Stratton engine, adjustable cutting height, and 3-in-1 capabilities make it versatile and suitable for a variety of lawns.
If you need a mower that is powerful but easy to operate, this model delivers great performance and value.
Price: $339
Where to buy: powersmartusa.com
F.A.Q
How do I properly maintain the blade on the PowerSmart B8621S lawn mower?
To ensure optimal performance and safety, check the blade regularly for wear or damage. If the blade becomes dull or bent, replace it. You can sharpen the blade once a year, but do not attempt to straighten a bent blade as it could cause vibrations and further damage. Always disconnect the spark plug wire before working on the blade.
Can I adjust the cutting height on uneven terrain with the PowerSmart B8621S?
Yes, the PowerSmart B8621S features a 6-position height adjustment system that can handle uneven terrain. It allows you to set the cutting height from 1.5 inches to 3.9 inches, ensuring you can adjust for various grass lengths and terrain conditions.
What type of oil should I use in the PowerSmart B8621S, and how much is needed?
The recommended oil for the PowerSmart B8621S is 10W-30, 4-stroke engine oil. The oil capacity of the engine is 15.8 fluid ounces (0.47 liters). Be sure to check the oil level before each use, and change the oil after the first 5 hours of operation and then regularly as part of routine maintenance.
Is the PowerSmart B8621S lawn mower suitable for mowing wet grass?
It is not recommended to mow wet grass with the PowerSmart B8621S or any lawn mower. Wet grass can cause clumping, clog the mower deck, and reduce cutting efficiency. It may also increase the risk of slips on slopes, and wet grass can damage the mower’s engine by restricting airflow.
How do I use the mulching function on the PowerSmart B8621S?
To use the mulching feature, simply close the rear discharge door with the mulching adapter in place, and do not attach the grass catcher. The mower will then finely chop grass clippings and return them to your lawn, helping to recycle nutrients into the soil. This is ideal for maintaining healthy grass growth.
