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The PowerSmart 21-Inch 140cc Gas Push Mower offers a straightforward 21-inch cutting width and a 140cc Briggs & Stratton engine. This setup works well for small, flat lawns where manual effort is acceptable. If you are searching for powersmart 21 inch 140cc gas push alternatives, you likely need different drive types or engine sizes. Some users prefer self-propelled models to reduce physical strain. Others may want more torque or a different power source entirely. The original product lacks self-propulsion, which limits its appeal on slopes or larger yards.
We selected these 6 options because their specifications overlap with the original mower. Each alternative shares the 21-inch cutting deck, ensuring compatibility with your existing workflow. However, they introduce variations in engine displacement, drive systems, and power types. For instance, some models feature 170cc or 201cc engines for greater torque. Others offer self-propelled drive systems or cordless battery operation. These spec differences address common limitations of the base model. You can choose based on your lawn size and terrain requirements. The list covers gas push, self-propelled gas, and cordless electric options.
How these alternatives compare
SENIX 21-Inch 170cc Self-Propelled Gas Mower
The SENIX 21-Inch 170cc model upgrades the drive system to self-propelled, removing the need for manual pushing. Its 170cc engine provides more displacement than the original 140cc unit, offering increased torque for consistent cutting. You gain rear-wheel drive traction, which helps on slight inclines. The unit weighs 61.7 pounds, making it heavier than the push mower. It retains the 21-inch cutting width and 3-in-1 functionality for mulching or bagging. This option suits flat yards up to one-third acre where you want reduced physical effort without the complexity of variable speed controls.
BILT HARD 21-Inch 201cc Self-Propelled Gas Mower
The BILT HARD 21-Inch 201cc mower offers the highest engine displacement in this group at 201cc. It features self-propelled drive, eliminating manual pushing. The unit weighs 89.2 pounds, significantly more than the original, which provides stability but reduces maneuverability. It maintains the 21-inch cutting deck and 3-in-1 discharge options. The fixed-speed self-propulsion is designed for consistent movement rather than adjustable speeds. This model is best for users who prioritize strong torque and reliable traction over lightweight handling. It is a robust choice for those who want maximum power output in a self-propelled format.
SENIX 21-Inch Self-Propelled Gas Mower
This SENIX 21-Inch model provides self-propelled front-wheel drive, making it easier to push than the original. It features a 170cc engine, which is larger than the original 140cc motor. The unit weighs 61.7 pounds and includes a 21-inch cutting deck with 3-in-1 functionality. It is designed for medium yards with uneven terrain, where the front-wheel drive offers better traction on slopes. You gain the convenience of self-propulsion while keeping the familiar mulching and bagging options. This alternative is ideal if you need assistance on uneven ground but want to stay within a gas-powered, self-propelled category.
PowerSmart 21-Inch 140cc Gas Push Mower
This PowerSmart variant keeps the 140cc engine and 21-inch cutting width but switches to a self-propelled drive. It offers the same 3-in-1 mowing functions as the original push model. The unit weighs 59 pounds, which is heavier than the manual version. It retains the steel deck construction for durability. This model is suitable for users who want the same engine performance but prefer not to push the mower manually. It is a practical upgrade for small, flat lawns where you value the brand's engine reliability but want the ease of self-propulsion. It bridges the gap between manual effort and powered movement.
Worx 21-Inch 40V Cordless Push Lawn Mower
The Worx 21-Inch 40V model switches from gas to cordless electric power. It uses a 40V battery with 5.0 Ah capacity and a brushless motor. The unit weighs 55.6 pounds, which is lighter than the gas alternatives. It maintains the 21-inch cutting width and 3-in-1 functionality. This mower eliminates gas and oil maintenance, appealing to those who want quiet operation. It is designed for small to medium lawns under half an acre. You trade engine displacement for zero emissions and simplified startup. This option is best if you want to avoid fuel storage and maintenance while retaining strong cutting performance.
PowerSmart 21-Inch 170cc Self-Propelled Gas Mower
This PowerSmart 21-Inch 170cc model upgrades the engine to 170cc and adds self-propelled drive. It retains the steel deck and 3-in-1 mowing functions. The unit weighs 59 pounds and features rear-wheel drive for better traction on slopes. It is designed for medium lawns with inclines, offering more power than the original 140cc engine. You gain the convenience of self-propulsion while staying with the PowerSmart brand. This alternative is ideal for users who need extra torque and rear-wheel traction for hilly terrain. It provides a balanced mix of power, durability, and ease of use for sloped yards.
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | PowerSmart 21-Inch 140cc Gas Push Mower Best overall | small, flat lawns requiring manual effort | |
| 2 | SENIX 21-Inch 170cc Self-Propelled Gas Mower Best premium | flat yards up to one-third acre | |
| 3 | BILT HARD 21-Inch 201cc Self-Propelled Gas Mower Also great | Users wanting strong torque and fixed-speed self-propulsion | |
| 4 | SENIX 21-Inch Self-Propelled Gas Mower Best budget | medium yards with uneven terrain | |
| 5 | PowerSmart 21-Inch 140cc Gas Push Mower Also great | small flat lawns needing versatile grass handling | |
| 6 | Worx 21-Inch 40V Cordless Push Lawn Mower Best cordless | Small to medium lawns under half an acre | |
| 7 | PowerSmart 21-Inch 170cc Self-Propelled Gas Mower Also great | medium lawns with slopes |
PowerSmart 21-Inch 140cc Gas Push Mower
Best for: small, flat lawns requiring manual effort
- Cutting Width
- 21"
- Drive Type
- Push
- Mowing Functions
- 3-in-1 (discharge, bagging, mulching)
- Motor Type
- 140cc Briggs&Stratton 4-stroke
- Height Adjustments
- 6 adjustments (1.5 to 3.9 inches)
- Power Type
- Gas
This PowerSmart mower features a 140cc Briggs & Stratton 4-stroke engine and a 21-inch steel cutting deck. It offers three mowing functions: side discharge, rear bagging, and mulching. You get six height adjustments ranging from 1.5 to 3.9 inches. The push drive requires manual effort. This model suits small yards where you prefer a simple, reliable gas mower without self-propulsion.
- 140cc Briggs & Stratton 4-stroke engine provides strong torque
- 21-inch steel cutting deck covers ground efficiently
- Six height settings allow cuts from 1.5 to 3.9 inches
- 3-in-1 capability supports mulching, bagging, and side discharge
- Push drive lacks the self-propelled mechanism found in most competitors
- 140cc engine displacement is lower than the 170cc and 201cc options on this list
- Manual effort required for all mowing conditions
- You have a small lawn under half an acre
- You prefer a lightweight push mower for easy storage
- You want a reliable gas engine with minimal maintenance
- You need self-propelled power for hilly terrain
- You want a larger engine for thick grass
- You prefer electric or cordless operation
Verdict: PowerSmart 21-Inch 140cc Gas Push Mower fits users with small, flat yards who value a straightforward gas engine and do not need self-propulsion. It is a practical option for those who do not mind pushing the mower manually.
SENIX 21-Inch 170cc Self-Propelled Gas Mower
Best for: flat yards up to one-third acre
- Cutting Width
- 21 in
- Drive Type
- Self-propelled, FWD
- Mowing Functions
- 3-in-1 (mulch, bag, side discharge)
- Motor Type
- 170 cc 4-cycle OHV gas
- Height Adjustments
- 6 positions, 1.25-3.75 in
- Engine Displacement
- 170cc
The SENIX 21-inch mower features a 170cc OHV gas engine delivering 3.8 HP. It offers self-propelled front-wheel drive for easier maneuvering on flat yards. The 3-in-1 steel deck supports mulching, bagging, and side discharge. You get six cutting height positions from 1.25 to 3.75 inches. The 1.7-bushel bagger and large wheels help manage up to one-third of an acre.
- 170cc 4-cycle OHV gas engine
- Self-propelled front-wheel drive
- 6-position height adjustment (1.25-3.75 in)
- 3-in-1 mulching, bagging, and side discharge
- 1.7-bushel included bagger
- Lower engine displacement than the 201cc BILT HARD and 21"-201cc SENIX options
- Heavier at 61.7 pounds compared to lighter push models
- Fewer height settings than the 7-position PowerSmart 170cc alternative
- You need self-propelled power for a yard up to one-third acre
- You want mulching, bagging, and side discharge options
- You prefer a durable steel deck over plastic
- You have a steep or uneven yard requiring rear-wheel drive
- You want a cordless electric mower for zero emissions
- You need more than six cutting height adjustments
Verdict: SENIX 21-Inch 170cc Self-Propelled Mower suits homeowners with flat, medium-sized lawns who value self-propelled ease and versatile discharge options. It provides reliable power for regular maintenance without the complexity of advanced drive systems.
BILT HARD 21-Inch 201cc Self-Propelled Gas Mower
Best for: Users wanting strong torque and fixed-speed self-propulsion
- Cutting Width
- 21"
- Drive Type
- Self-Propelled
- Mowing Functions
- 3-in-1
- Motor Type
- 201cc 4-cycle OHV
- Height Adjustments
- 8-position (1.2" to 3.75")
- Power Type
- Gas
This BILT HARD mower features a 201cc 4-cycle OHV engine with 9.0 ft·lb of torque. It offers a 21-inch cutting width and eight height adjustments from 1.2 to 3.75 inches. The self-propelled drive moves at a fixed speed to reduce pushing effort. You get three-in-one versatility for mulching, bagging, or side discharge. This model suits users who want reliable power and consistent forward movement on average-sized lawns.
- 201cc engine delivers 9.0 ft·lb of torque
- Eight-position cutting height adjustment lever
- Self-propelled drive reduces pushing effort
- Three-in-one mulching, bagging, and side discharge options
- Heavier build at 89.2 pounds compared to lighter push models
- Fixed walking speed limits speed control compared to variable drive options
- You need a self-propelled mower for moderate slopes
- You want multiple grass clipping disposal methods
- You prefer a single-lever height adjustment system
- You require variable speed control for the drive
- You need a lightweight mower for easy storage
- You prefer electric power sources over gas
Verdict: BILT HARD 21" Self-Propelled Gas Mower provides strong torque and reliable self-propelled movement for users who prioritize consistent cutting height and versatile discharge options over variable speed control.
SENIX 21-Inch Self-Propelled Gas Mower
Best for: medium yards with uneven terrain
- Cutting Width
- 21 in
- Drive Type
- Self-propelled, front-wheel drive
- Mowing Functions
- 3-in-1
- Motor Type
- 170cc 4-cycle OHV
- Height Adjustments
- 6 positions, 1.25 to 3.75 inches
- Power Type
- Gas
The SENIX 21-inch self-propelled gas mower features a 170cc 4-cycle engine delivering 3.8 HP. It offers a 21-inch cutting width with a 3-in-1 deck for mulching, side discharge, and bagging. You get six height adjustments from 1.25 to 3.75 inches. The front-wheel drive and 16-gallon bag make it suitable for yards up to 1/3 acre. It weighs 61.7 pounds.
- 170cc 4-cycle engine provides 3.8 HP and 6.5 ft-lb torque
- 21-inch high-strength steel deck supports mulching, side discharge, and bagging
- 6-position height adjustment ranges from 1.25 to 3.75 inches
- Front-wheel drive with 8-inch front and 11-inch rear wheels
- 170cc engine displacement is lower than the 201cc and 140cc competitors
- 16-gallon bag capacity is smaller than typical 3-in-1 systems
- 61.7-pound weight is heavier than standard push mowers
- You need a self-propelled mower for uneven or sloped terrain
- You want mulching, side discharge, and bagging flexibility
- You prefer a 170cc engine for moderate yard sizes
- You require a self-propelled mower with a 201cc engine
- You need a mower for yards larger than 1/3 acre
- You prefer a lighter mower under 60 pounds
Verdict: SENIX 21-Inch Self-Propelled Gas Mower fits users who need reliable front-wheel drive and versatile discharge options for medium-sized, uneven lawns.
PowerSmart 21-Inch 140cc Gas Push Mower
Best for: small flat lawns needing versatile grass handling
- Cutting Width
- 21"
- Drive Type
- Push, rear-wheel drive
- Mowing Functions
- 3-in-1 (rear bag, mulch, rear discharge)
- Motor Type
- 140cc OHV
- Height Adjustments
- 6-position (1.5" – 3.9")
- Power Type
- Gas
This PowerSmart push mower features a 140cc OHV engine and a 21-inch steel deck. It offers three-in-one cutting functions for bagging, mulching, or rear discharge. The single-lever height adjustment sets the deck from 1.5 to 3.9 inches. Rear-wheel drive with 10-inch wheels aids traction on slopes. It suits small to medium lawns where manual pushing is acceptable.
- 140cc OHV engine provides reliable startup
- 21-inch steel deck ensures even cuts
- 3-in-1 bag, mulch, and discharge options
- 6-position height adjustment from 1.5 to 3.9 inches
- Rear-wheel drive improves traction on slopes
- 140cc engine displacement is lower than the 170cc and 201cc options on this list
- Push design requires more physical effort than the self-propelled alternatives
- 16.5-inch width is narrower than the 21-inch cutting width of competitors
- You want a reliable push mower for small lawns
- You need 3-in-1 cutting versatility for grass management
- You prefer a steel deck for durability
- You require self-propelled assistance for hilly terrain
- You need more than 140cc of engine power
- You want a wider cutting deck for faster mowing
Verdict: PowerSmart 21" 140cc Gas Push Mower fits users who prioritize a durable steel deck and flexible discharge options over self-propelled convenience. It is a practical option for flat, small yards where manual pushing is manageable.
Worx 21-Inch 40V Cordless Push Lawn Mower
Best for: Small to medium lawns under half an acre
- Cutting Width
- 21"
- Drive Type
- Push
- Voltage
- 40V
- Battery Capacity
- 5.0Ah
- Mowing Functions
- 3-in-1
- Motor Type
- Brushless
This Worx model offers a 21-inch cutting width with a brushless motor and 40V power. It includes two 5.0Ah batteries for up to half-acre coverage. Intellicut technology adjusts speed based on grass density. The single-lever height adjustment offers seven settings from 1.5 to 4 inches. It supports mulching, bagging, and side discharge. You get efficient cutting with less clogging thanks to the AeroDeck design.
- Brushless motor delivers 40% more power than previous generations
- Intellicut technology automatically adjusts cutting speed for thick grass
- Seven-position height adjustment lever for quick changes
- AeroDeck vented design reduces clumping and clogs
- Expandable PowerShare battery system works with 140+ tools
- Push drive type lacks the self-propelled ease of competitors
- 55.6-pound weight is heavier than many gas push mowers
- 40V voltage is lower than the 140cc-201cc gas engines in this guide
- You want a quiet, zero-emission option for small to medium lawns
- You already own WORX PowerShare batteries and tools
- You prefer mulching or bagging over side discharge
- You need self-propelled power for steep or large yards
- You require more than half-acre runtime per charge
- You prefer the raw torque of a 200cc gas engine
Verdict: Worx 21-Inch 40V Cordless Mower suits homeowners with half-acre lawns who value quiet operation and smart power management. It is a solid choice if you want to avoid gas and oil maintenance while retaining strong cutting performance.
PowerSmart 21-Inch 170cc Self-Propelled Gas Mower
Best for: medium lawns with slopes
- Cutting Width
- 21 in
- Drive Type
- Self-propelled (rear-wheel drive)
- Mowing Functions
- 3-in-1 (mulch, side discharge, bag)
- Motor Type
- 4-stroke OHV, 170 cc
- Height Adjustments
- 6 positions (1.5" – 3.9")
- Power Type
- Gas
This PowerSmart mower features a 170cc 4-stroke OHV engine and rear-wheel drive for self-propelled operation. It cuts a 21-inch path with a durable steel deck. You get six cutting height positions from 1.5 to 3.9 inches. The 3-in-1 design handles mulching, side discharge, or rear bagging. Weighing 59 pounds, it folds for storage and suits medium lawns needing reliable traction on slopes.
- 170cc 4-stroke OHV engine with auto choke
- Rear-wheel drive self-propelled system
- Durable steel deck construction
- Six-position height adjustment from 1.5 to 3.9 inches
- 3-in-1 mulching, side discharge, and bagging options
- 59-pound weight is heavier than lighter push models
- 21-inch cutting width matches the base model rather than exceeding it
- You need rear-wheel drive for slopes and uneven terrain
- You want a steel deck for long-lasting durability
- You prefer a self-propelled mower for less effort
- You require a self-propelled mower with more than 170cc of engine displacement
- You want a lighter mower under 50 pounds
- You prefer a cordless electric mower over gas power
Verdict: PowerSmart 21-Inch 170cc Self-Propelled is a solid choice for homeowners with medium lawns and slopes who value steel deck durability and rear-wheel traction over maximum power output.
Specifications side by side
| Spec | PowerSmart 21-Inch 140cc Gas Push Mower | SENIX 21-Inch 170cc Self-Propelled Gas Mower | BILT HARD 21-Inch 201cc Self-Propelled Gas Mower | SENIX 21-Inch Self-Propelled Gas Mower | PowerSmart 21-Inch 140cc Gas Push Mower | Worx 21-Inch 40V Cordless Push Lawn Mower | PowerSmart 21-Inch 170cc Self-Propelled Gas Mower |
|---|---|---|---|---|---|---|---|
| Cutting Width | 21" | 21 in | 21" | 21 in | 21" | 21" | 21 in |
| Drive Type | Push | Self-propelled, FWD | Self-Propelled | Self-propelled, front-wheel drive | Push, rear-wheel drive | Push | Self-propelled (rear-wheel drive) |
| Voltage | – | – | – | – | – | 40V | – |
| Battery Capacity | – | – | – | – | – | 5.0Ah | – |
| Mowing Functions | 3-in-1 (discharge, bagging, mulching) | 3-in-1 (mulch, bag, side discharge) | 3-in-1 | 3-in-1 | 3-in-1 (rear bag, mulch, rear discharge) | 3-in-1 | 3-in-1 (mulch, side discharge, bag) |
| Motor Type | 140cc Briggs&Stratton 4-stroke | 170 cc 4-cycle OHV gas | 201cc 4-cycle OHV | 170cc 4-cycle OHV | 140cc OHV | Brushless | 4-stroke OHV, 170 cc |
| Height Adjustments | 6 adjustments (1.5 to 3.9 inches) | 6 positions, 1.25-3.75 in | 8-position (1.2" to 3.75") | 6 positions, 1.25 to 3.75 inches | 6-position (1.5" – 3.9") | 7-position, 1.5" – 4" | 6 positions (1.5" – 3.9") |
| Power Type | Gas | Gas | Gas | Gas | Gas | Cordless | Gas |
| Engine Displacement | 140cc | 170cc | – | 170cc | 140cc | – | 170cc |
| Application | – | – | – | – | – | 1/2 Acre | – |
| Engine Stroke | 4-Stroke | – | – | – | – | – | 4-Stroke |
| Dimensions | 32.9 × 16.5 × 22.6 inches | 61 × 22.8 × 41.5 inches | – | 61 × 22.8 × 41.5 inches | 32.9 × 16.5 × 22.6 inches | 60 × 22 × 40.9 inches | 56.5 × 22 × 42.5 inches |
| Weight | – | 61.7 pounds | 89.2 pounds | 61.7 pounds | – | 55.6 pounds | 59 pounds |
| Color | Black | Blue | – | Blue | Black+R | Black and Orange | Black |
| Model | B8621P | A025054-A | TMA-0562-N3-0513 | LSSG-M10-III | B8721S2 | WG752 | DB8621S |
| Size | – | 21 Inch-170cc-6 Position | 21 inch self propelled | 21-Inch Gas-Powered | 21-Inch | – | 21 Inch-170cc |
If you need slightly more engine displacement, you can compare powersmart 21 inch 144cc push gas lawn mower alternatives.
Frequently asked questions
Which alternative offers the most powerful engine for tough grass?
The BILT HARD 21-Inch 201cc Self-Propelled Gas Mower provides the highest engine displacement at 201cc. This setup delivers strong torque for consistent cutting in dense or tough grass conditions. It features a fixed-speed self-propelled drive, ensuring reliable movement without the complexity of variable speed controls. This makes it ideal for users prioritizing raw power and durable performance over adjustable drive settings.
Can I mulch, bag, and side-discharge with these alternatives?
Most alternatives support three-in-one functionality, including mulching, bagging, and side discharge. The SENIX 21-Inch 170cc models and the BILT HARD mower all offer these versatile discharge options. The WORX 21-Inch 40V Cordless Mower also includes mulching, bagging, and side discharge capabilities. This flexibility allows you to manage grass clippings according to your lawn care preferences and disposal needs.
Which model is best for uneven terrain or slopes?
The SENIX 21-Inch Self-Propelled Gas Mower is designed for medium yards with uneven terrain. It features front-wheel drive traction, which helps maintain stability on irregular ground. Additionally, the PowerSmart 21-Inch 170cc Self-Propelled Mower offers rear-wheel traction, making it a solid choice for medium lawns with slopes. Both models provide self-propelled ease to handle challenging landscapes without manual pushing.
Is there a quiet cordless option available?
The WORX 21-Inch 40V Cordless Push Lawn Mower provides quiet operation compared to gas engines. It uses a 40V brushless motor and a 5.0 Ah battery for smart power management. This model suits homeowners with lawns under half an acre who want to avoid gas and oil maintenance. It retains strong cutting performance while eliminating the noise and fumes associated with traditional gas-powered mowers.
Do these alternatives include self-propelled drive systems?
Several alternatives upgrade from the manual push system to self-propelled drives. The SENIX 170cc models and the BILT HARD 201cc mower all feature self-propelled movement. The PowerSmart 170cc Self-Propelled model also includes this feature. These systems remove the need for manual pushing, reducing physical effort. They provide consistent forward movement, which is helpful for larger or sloped lawns where manual pushing would be tiring.
What is the cutting width of these alternatives?
All listed alternatives feature a 21-inch cutting width. This matches the width of the PowerSmart 140cc model. The consistent 21-inch deck size ensures similar coverage per pass. This standard width is practical for small to medium lawns. It allows for efficient mowing without being overly bulky, making it easier to maneuver around obstacles while maintaining a uniform cut across your grass.
