3 Best AMERISUN 21 Inch Lawn Mowers, Compared
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We compared 3 best AMERISUN 21 Inch lawn mowers to help you choose. The AMERISUN 21-Inch 170cc Self-Propelled Gas Mower leads because its 170cc engine provides robust power for thick grass. These picks rely strictly on the specifications published on the listings. You do not need to guess which model fits your yard. This guide helps you decide between self-propelled and push options based on engine size and drive type. We focus on the data to ensure you find the right tool for your specific mowing needs.
Quick picks
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | AMERISUN 21-Inch 170cc Self-Propelled Gas Mower Best overall | medium to large yards with thick grass | Check price of AMERISUN 21-Inch 170cc Self-Propelled Gas Mower on Amazon |
| 2 | AMERISUN 21-Inch 144cc Gas Push Mower Best budget | Small yards needing lightweight push mowing | Check price of AMERISUN 21-Inch 144cc Gas Push Mower on Amazon |
| 3 | AMERISUN 21-Inch Gas Push Mower Also great | Small yards needing lightweight push mowing | Check price of AMERISUN 21-Inch Gas Push Mower on Amazon |
The best fit for you
- You have a large yard with thick grass AMERISUN 21-Inch 170cc Self-Propelled Gas Mower The 170cc engine and self-propelled drive handle challenging terrain and heavy grass effectively.
- You need a lightweight mower for small yards AMERISUN 21-Inch 144cc Gas Push Mower This push model offers basic performance without the weight and complexity of self-propulsion.
- You want an affordable option for routine care AMERISUN 21-Inch Gas Push Mower It provides solid 2-in-1 mowing function for small to medium lawns at a budget price.
Our 3 picks
AMERISUN 21-Inch 170cc Self-Propelled Gas Mower
Best for: medium to large yards with thick grass
- Size
- 21 Inch (what this guide is about)
- Power Source
- Gas
- Cutting Width
- 21 in
- Drive Type
- Self-propelled
- Deck Material
- Steel
- Cutting Height
- 1.5"-3.9", 6 positions
View on Amazon: AMERISUN 21-Inch 170cc Self-Propelled Gas Mower Affiliate link
This AMERISUN mower features a 170cc 4-stroke OHV engine and self-propelled drive. It offers a 21-inch steel cutting deck with 3-in-1 functionality. The 6-position height adjustment ranges from 1.5 to 3.9 inches. Large 10-inch rear wheels help navigate uneven terrain. It includes a 1.4-bushel grass catcher and foldable handle for storage. This model suits medium to large yards with thick grass.
Pros
- 170cc 4-stroke OHV gas engine for consistent power
- Self-propelled drive with 10-inch rear wheels
- 21-inch steel deck with 3-in-1 mowing functions
- 6-position cutting height adjustment from 1.5 to 3.9 inches
Cons
- Heavier build due to steel deck and self-propelled mechanism
- Requires manual starting without electric start feature mentioned in data
- 1.4-bushel grass catcher capacity is modest for large yards
Good fit if
- You need extra power for thick or tall grass
- You want self-propelled assistance on slopes or uneven ground
- You prefer a versatile 3-in-1 mowing system
Skip if
- You prefer lightweight push mowers for small, flat lawns
- You want electric start convenience
- You need a larger grass catcher for frequent emptying
Verdict: AMERISUN 21" Self-Propelled 170cc Mower fits users with medium to large yards who need robust power and self-propelled ease. Its 170cc engine and large wheels handle challenging terrain well, making it ideal for those prioritizing cutting performance over lightweight convenience.
AMERISUN 21-Inch 144cc Gas Push Mower
Best for: Small yards needing lightweight push mowing
- Size
- 21 Inch (what this guide is about)
- Power Source
- Gas
- Cutting Width
- 21 in
- Drive Type
- Push
- Deck Material
- Steel
- Cutting Height
- 1.5–3.9 in, 6 positions
View on Amazon: AMERISUN 21-Inch 144cc Gas Push Mower Affiliate link
This AMERISUN 21-inch push mower uses a 144cc 4-cycle OHV engine to cut grass with a 21-inch steel deck. It offers 2-in-1 mulching and side discharge functions. You can adjust the cutting height across six positions, ranging from 1.5 to 3.9 inches. The unit weighs 63 lbs and features 7-inch front and 10-inch rear wheels. It is designed for routine lawn maintenance in small to medium-sized yards.
Pros
- 144cc 4-cycle OHV engine for reliable starting
- 21-inch steel cutting deck for durability
- 6-position cutting height adjustment from 1.5 to 3.9 inches
- 2-in-1 mulching and side discharge versatility
- Foldable handle for compact storage
Cons
- Push drive requires manual effort unlike self-propelled models
- Lower 144cc engine displacement compared to 170cc competitors
- Limited to 2-in-1 functions instead of 3-in-1
Good fit if
- You need a lightweight mower under 65 lbs for easy maneuvering
- You have a small to medium-sized yard with routine maintenance needs
- You prefer the simplicity of a push mower over self-propelled options
Skip if
- You require self-propelled drive to handle steep slopes or large areas
- You need a 3-in-1 mower with a rear bagging system
- You prefer a higher displacement engine for heavy-duty thick grass
Verdict: AMERISUN 21" Push Gas Mower fits users who want a lightweight, easy-to-store push mower for small yards. It lacks the power and drive of self-propelled models but offers solid basic performance for routine care.
AMERISUN 21-Inch Gas Push Mower
Best for: Small yards needing lightweight push mowing
- Size
- 21 Inch (what this guide is about)
- Power Source
- Gas
- Cutting Width
- 21 in
- Drive Type
- Push
- Deck Material
- Steel
- Cutting Height
- 1.5 to 3.9 in, 6 positions
View on Amazon: AMERISUN 21-Inch Gas Push Mower Affiliate link
This AMERISUN 21-inch gas mower features a 144cc 4-stroke OHV engine and a steel deck. It operates as a push mower with a 2-in-1 mulching and side discharge system. The cutting height adjusts from 1.5 to 3.9 inches across six positions. Weighing 63 lb, it includes a foldable handle for compact storage. This model suits small to medium residential yards where easy maneuverability and simple maintenance are priorities.
Pros
- 144cc 4-stroke OHV gas engine
- 21-inch steel cutting deck
- 6-position height adjustment (1.5-3.9 in)
- 2-in-1 mulching and side discharge
- Foldable handle for storage
Cons
- Push drive requires manual effort
- Recoil start only
- No self-propulsion system
Good fit if
- You have a small to medium residential lawn
- You prefer a lightweight mower under 70 lb
- You need mulching and side discharge options
Skip if
- You require self-propelled movement for slopes
- You want electric or battery power
- You need a larger 22-inch cutting width
Verdict: AMERISUN 21" Push Gas Mower fits homeowners with small to medium yards who want a lightweight, easy-to-store push mower. It lacks self-propulsion, making it less ideal for uneven terrain.
Specifications side by side
| Spec | AMERISUN 21-Inch 170cc Self-Propelled Gas Mower | AMERISUN 21-Inch 144cc Gas Push Mower | AMERISUN 21-Inch Gas Push Mower |
|---|---|---|---|
| Power Source | Gas | Gas | Gas |
| Cutting Width | 21 in | 21 in | 21 in |
| Drive Type | Self-propelled | Push | Push |
| Deck Material | Steel | Steel | Steel |
| Cutting Height | 1.5"-3.9", 6 positions | 1.5–3.9 in, 6 positions | 1.5 to 3.9 in, 6 positions |
| Mowing Function | 3-in-1 | 2-in-1 | 2-in-1 |
| Voltage | 170cc | not stated | not stated |
| Application | Lawn | Yard, Lawn | Lawn |
| Size | 21 Inch | 21 Inch | 21 Inch |
| Dimensions | 32.9 × 16.5 × 22.6 inches | 32.9 × 16.5 × 22.6 inches | 32.9 × 16.5 × 22.6 inches |
| Color | Black+Red | Black | Black |
| Model | AV8621S1 | AV8621C1 | AV8621C1 |
How to choose the right one
-
Check engine displacement
Look at the cubic centimeter rating to gauge raw power. A 170cc engine delivers more torque than a 144cc unit. This extra power helps the blades spin faster through thick or wet grass. If you have medium to large yards, the higher displacement model handles challenging terrain better. For small, flat lawns, the lower displacement is sufficient. Match this spec to your grass density and yard size for optimal cutting performance.
-
Select drive type wisely
Decide between self-propelled and push models based on your terrain. Self-propelled mowers move forward on their own, reducing physical effort. This is ideal for uneven ground or large areas. Push mowers require you to walk and guide them. They are lighter and easier to store. Choose self-propulsion if you want ease. Pick push if you prefer manual control and a simpler machine for small, flat spaces.
-
Review mowing functions
Check the mulching, bagging, and side-discharge options. A 3-in-1 system offers versatility for different yard needs. It allows you to mulch clippings back into the lawn, bag them for cleanup, or side-discharge for quick work. A 2-in-1 setup provides fewer options but often keeps the design simpler. Consider your preference for grass management. More functions mean more attachments or adjustments, while fewer functions mean less complexity.
-
Assess fuel requirements
These models run on gasoline, not batteries. This means you need access to fuel and must handle refueling. Gas engines typically offer consistent power for longer sessions without recharging. You must maintain oil levels and spark plugs. This power source is reliable for larger jobs. Ensure you are comfortable managing fuel storage and engine upkeep. This choice suits users who prioritize runtime and power over electric convenience.
-
Consider weight and size
Self-propelled models are heavier due to their drive systems. This weight aids traction but makes lifting harder. Push models are lighter and easier to maneuver into tight spaces or store in sheds. Measure your storage area before buying. Heavier mowers may be difficult to carry up stairs. Lighter options are better for small yards where frequent moving is needed. Balance your strength and storage constraints with the machine's physical dimensions.
Frequently asked questions
What is the best AMERISUN 21-inch mower for thick grass?
The AMERISUN 21-Inch 170cc Self-Propelled Gas Mower is the top choice. Its 170cc engine provides robust power for thick grass. The self-propelled drive helps you navigate challenging terrain with ease. Large wheels further assist in handling uneven ground effectively.
Which AMERISUN 21-inch model is best for small yards?
The AMERISUN 21-Inch 144cc Gas Push Mower is ideal for small yards. It is lightweight and easy to store. This push model offers solid basic performance for routine care. It lacks the power and drive of self-propelled models but suits smaller spaces well.
Does the AMERISUN 21-inch mower have self-propelled drive?
Only the top-ranked model features self-propulsion. The AMERISUN 21-Inch 170cc Self-Propelled Gas Mower includes this drive type. The other two models in the list are push mowers. They rely on your physical effort to move the machine across the lawn.
What cutting functions do these AMERISUN mowers offer?
The 170cc self-propelled model offers a 3-in-1 mowing function. The two push models provide a 2-in-1 function. These functions typically include bagging, mulching, and side discharge. You can choose the mode that best suits your lawn care needs.
How wide is the cutting deck on these mowers?
All three models feature a 21-inch cutting deck. This width allows you to cover more ground per pass. The consistent deck size ensures uniform coverage across different models. It is a standard width suitable for most residential lawns.
What is the difference between the 170cc and 144cc engines?
The 170cc engine delivers more torque than the 144cc unit. This extra power helps the blades spin faster through thick or wet grass. The 170cc model is better for challenging terrain. The 144cc engine is sufficient for routine care in smaller yards.
Are there different color options for AMERISUN 21-inch mowers?
Yes, you can choose between Black+Red and Black finishes. The self-propelled 170cc model comes in Black+Red. The two push models are available in Black. The color choice does not affect performance or specifications.