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Finding the best 144cc lawn mowers requires looking at hard specs, not marketing claims. We compared 5 models ranked by their published data. The PowerSmart 21-Inch 140cc Gas Push Mower leads because its 21-inch cutting width covers more ground per pass. This wider deck helps you finish medium to large yards faster. You get a 3-in-1 mulching system for flexible disposal. These picks rely strictly on engine displacement, deck size, and drive type. Use this guide to decide which mower fits your yard size and storage constraints.
Check cutting width and drive type
The most critical difference among these 144cc mowers is the cutting width. Most models offer a 21-inch deck, which covers more ground per pass. However, the SENIX 20-inch model features a narrower 17-inch cut. You should also note that every listed option is a push mower. Self-propelled drive is not available in this specific group.
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | PowerSmart 21-Inch 140cc Gas Push Mower Best overall | Medium to large yards needing wide cutting width | |
| 2 | PowerSmart 21-Inch Push Gas Mower Kit Best budget | small yards needing mower and trimmer combo | |
| 3 | SENIX 20" 144cc Gas Mower with Trimmer Best premium | Gas lawn care bundles with trimmer | |
| 4 | PowerSmart 21-Inch Gas Mower and Trimmer Combo Also great | Medium yards needing mower and trimmer | |
| 5 | PowerSmart 21-Inch 144cc Gas Push Mower Best 4-stroke | flat lawns needing mulching or side-discharge |
The best fit for you
- You need the widest cutting path for large yards – PowerSmart 21-Inch 140cc Gas Push Mower – It features a 21-inch cutting width to cover ground faster.
- You want a budget bundle with an included trimmer – PowerSmart 21-Inch Push Gas Mower Kit – This kit includes an edger and brush cutter for extra yard work.
- You prefer a premium gas mower with a matching trimmer – SENIX 20" 144cc Gas Mower with Trimmer – It comes with a 26.5cc string trimmer for edging tasks.
- You need a powerful mower and trimmer combo – PowerSmart 21-Inch Gas Mower and Trimmer Combo – It includes a brush cutter and weighs 62 pounds for durability.
- You want a 4-stroke engine for flat lawns – PowerSmart 21-Inch 144cc Gas Push Mower – It uses a 4-stroke engine with mulching and side-discharge functions.
Is 144cc Engine Displacement Worth It?
Engine displacement measures the volume of air and fuel the engine moves. A 144cc engine provides the power needed to spin a wide deck through thick grass. You will notice this power when tackling medium to large yards or uneven terrain. The listed models use this displacement to drive 21-inch cutting paths without self-propulsion. If you prefer a push mower, this displacement ensures the blade maintains speed under load. It is a reliable balance for homeowners who do not need heavy-duty commercial power but want consistent performance.
Worth it if
- You have a medium to large yard that requires a wide 21-inch cutting path.
- You prefer a push mower but need enough power to cut through dense grass.
- You want a gas mower that balances weight and cutting efficiency.
Skip it if
- You have a small yard where a 140cc or smaller engine suffices.
- You need self-propelled convenience for steep hills or large areas.
- You prefer electric power sources to avoid gas maintenance.
PowerSmart 21-Inch 140cc Gas Push Mower
Best for: Medium to large yards needing wide cutting width
- Engine Displacement
- 144cc
- Cutting Width
- 21"
- Drive Type
- Push, rear-wheel drive
- Mowing Functions
- 3-in-1 (bag, mulch, rear discharge)
- Motor Type
- 140cc OHV
- Height Adjustments
- 6-position (1.5" – 3.9")
This PowerSmart push mower features a 144cc OHV engine and a 21-inch steel deck. It offers three mowing functions: bagging, mulching, and rear discharge. You get six cutting height positions ranging from 1.5 to 3.9 inches. The unit weighs 31.8 pounds and measures 32.9 inches long. It suits medium to large yards where you need efficient coverage and versatile clippings management.
- 144cc OHV engine provides reliable power for tough jobs
- 21-inch cutting width covers more ground per pass
- Three-in-one functionality allows bagging, mulching, or rear discharge
- Six-position height adjustment from 1.5 to 3.9 inches
- Push design requires more physical effort than self-propelled models
- 1.4-bushel grass bag capacity is smaller than larger commercial bags
- 31.8-pound weight is heavier than some lighter push mowers
- You have a medium to large yard and want wider coverage
- You need versatile clippings management with bagging or mulching
- You prefer a durable steel deck for longevity
- You need self-propelled drive to reduce physical exertion
- You have a very small yard and need a compact mower
- You prefer electric power sources over gas engines
Verdict: PowerSmart 21-Inch 144cc Gas Mower fits homeowners with medium to large yards who value a wide cutting path and multiple clippings options. It is a solid choice for those willing to push the mower for better coverage and durability.
PowerSmart 21-Inch Push Gas Mower Kit
Best for: small yards needing mower and trimmer combo
- Engine Displacement
- 144cc
- Cutting Width
- 21"
- Drive Type
- push
- Mowing Functions
- 2-in-1 (side discharge, mulching)
- Motor Type
- 144cc 4-cycle OHV
- Power Type
- Gas
This PowerSmart kit includes a 21-inch push mower with a 144cc 4-cycle OHV engine and a 16-inch string trimmer. The mower offers side discharge and mulching functions. The steel deck provides durability. The trimmer features a 25.4cc engine. This bundle suits users with small yards who want cutting and trimming tools in one purchase.
- 144cc 4-cycle OHV engine with auto choke
- 21-inch steel deck for durability
- 2-in-1 mowing functions: side discharge and mulching
- Includes 16-inch string trimmer with 25.4cc engine
- Primer structure for easier starting
- Push drive requires manual effort
- Only offers 2-in-1 mowing functions
- Trimmer engine displacement is smaller at 25.4cc
- You need a mower and trimmer combo for a small yard
- You prefer side discharge or mulching over bagging
- You want a durable steel deck
- You require self-propelled drive for hills
- You need a bagging system for clippings
- You only want a mower without a trimmer
Verdict: PowerSmart 21-Inch 144cc Gas Mower Kit is a practical bundle for small yards. It fits users who value a steel deck and a included trimmer over self-propelled convenience.
SENIX 20" 144cc Gas Mower with Trimmer
Best for: Gas lawn care bundles with trimmer
- Engine Displacement
- 144cc
- Cutting Width
- 20 in
- Drive Type
- Push
- Motor Type
- 144 cc 4-cycle gas
- Height Adjustments
- 3 settings
- Dimensions
- 25.6 × 21.8 × 13 inches
This SENIX combo includes a 20-inch push mower with a 144cc engine and a 17-inch string trimmer with a 26.5cc engine. The mower offers three height settings and a push drive. It suits users who want a gas-powered yard care bundle. The straight-shaft trimmer handles edging and thick weeds. You get a complete gas lawn maintenance set.
- 144cc 4-cycle gas engine for steady power
- Includes 17-inch gas string trimmer with 26.5cc engine
- Three cutting height settings for different grass conditions
- Straight-shaft design for trimming edges and borders
- 20-inch cutting width is narrower than the 21-inch mowers on this list
- Only three height adjustment settings compared to more options elsewhere
- Push drive requires manual effort unlike self-propelled competitors
- You need a gas-powered string trimmer alongside your mower
- You prefer manual push effort over self-propelled drive
- You want a 20-inch cutting width for smaller yards
- You require a self-propelled drive system for hills
- You need a 21-inch or wider cutting deck
- You prefer electric or battery-powered equipment
Verdict: SENIX 20-Inch 144cc Gas Mower Combo fits buyers who want a complete gas yard care bundle. It suits those who need a matching string trimmer and do not mind a push mower with a 20-inch deck. The included 26.5cc trimmer adds value for edging tasks.
PowerSmart 21-Inch Gas Mower and Trimmer Combo
Best for: Medium yards needing mower and trimmer
- Engine Displacement
- 144cc
- Cutting Width
- 21-inch
- Drive Type
- Push
- Mowing Functions
- mulching, bagging or side-discharging
- Motor Type
- 144cc 4-cycle
- Power Type
- Gas
This PowerSmart kit pairs a 21-inch, 144cc push mower with a 16-inch, 25.4cc string trimmer. The mower offers mulching, bagging, and side-discharging options. It features a 4-cycle engine with auto choke. The trimmer includes a 10-inch brush cutter blade. This setup suits medium yards needing lawn care and edging tools in one purchase.
- 144cc 4-cycle engine with auto choke
- 21-inch cutting width for efficient coverage
- Includes 16-inch string trimmer with brush cutter
- Three mowing functions: mulching, bagging, side-discharge
- 62-pound weight adds to lifting effort
- 60-inch length requires ample storage space
- 5-times pull starter needs more effort
- You need a mower and trimmer combo
- You have a medium-sized yard
- You want mulching and bagging options
- You prefer lightweight equipment under 50 pounds
- You lack space for a 60-inch long unit
- You want electric start for easier ignition
Verdict: PowerSmart 21-Inch 144cc Mower Kit fits users who want a complete yard care solution with a powerful 144cc engine and included trimmer, provided you can handle its 62-pound weight.
PowerSmart 21-Inch 144cc Gas Push Mower
Best for: flat lawns needing mulching or side-discharge
- Engine Displacement
- 144cc
- Cutting Width
- 21 inch
- Drive Type
- Push
- Mowing Functions
- 2-in-1 (side-discharge, mulching)
- Motor Type
- 144cc 4-Stroke OHV
- Height Adjustments
- 6 positions, 1.5" to 3.9"
The PowerSmart DB2321CR is a 21-inch push mower with a 144cc 4-stroke OHV engine. It offers a 2-in-1 side-discharge and mulching setup. You get six height positions from 1.5 to 3.9 inches. The unit weighs 44 pounds and features 10-inch rear wheels. It suits users needing a reliable gas mower for flat, manageable yards.
- 144cc 4-stroke OHV engine with forced air cooling
- 21-inch cutting deck for a wider mowing path
- Six height adjustments from 1.5 to 3.9 inches
- 2-in-1 side-discharge and mulching capabilities
- 95% pre-assembled for quick setup
- Push drive requires manual effort compared to self-propelled models
- 44-pound weight may be heavy for some users
- 2-in-1 function lacks a dedicated bagging option
- You have a small to medium flat lawn
- You prefer the simplicity of a push mower
- You want a mulching or side-discharge setup
- You need self-propelled ease on slopes
- You require a bagging system for clippings
- You want a lighter mower under 40 pounds
Verdict: PowerSmart 21-Inch 144cc Push Mower fits users with flat yards who value a wide 21-inch cut and do not need self-propulsion or bagging.
Specifications side by side
| Spec | PowerSmart 21-Inch 140cc Gas Push Mower | PowerSmart 21-Inch Push Gas Mower Kit | SENIX 20" 144cc Gas Mower with Trimmer | PowerSmart 21-Inch Gas Mower and Trimmer Combo | PowerSmart 21-Inch 144cc Gas Push Mower |
|---|---|---|---|---|---|
| Cutting Width | 21" | 21" | 20 in | 21-inch | 21 inch |
| Drive Type | Push, rear-wheel drive | push | Push | Push | Push |
| Mowing Functions | 3-in-1 (bag, mulch, rear discharge) | 2-in-1 (side discharge, mulching) | – | mulching, bagging or side-discharging | 2-in-1 (side-discharge, mulching) |
| Motor Type | 140cc OHV | 144cc 4-cycle OHV | 144 cc 4-cycle gas | 144cc 4-cycle | 144cc 4-Stroke OHV |
| Height Adjustments | 6-position (1.5" – 3.9") | – | 3 settings | – | 6 positions, 1.5" to 3.9" |
| Power Type | Gas | Gas | Gas | Gas | Gas |
| Engine Displacement | 144cc | 144cc | 144cc | 144cc | 144cc |
| Included Equipment | – | Edger, Brush Cutter | – | Edger, Brush Cutter | – |
| Engine Stroke | – | – | – | – | 4-Stroke |
| Dimensions | 32.9 × 16.5 × 22.6 inches | 63 × 23 × 42 inches | 25.6 × 21.8 × 13 inches | 60 × 23 × 38 inches | 33 × 23 × 18 inches |
| Weight | 31.8 pounds | – | – | 62 pounds | 44 pounds |
| Color | Black&Red | Mulching Mower | Black & Blue | Red | gas |
| Model | B8721S2 | DB8621C+PS4532 | LSPG-L4+GTS4QL-L | V8721P+PS4532 | DB2321CR |
| Size | – | 21-inch | – | 21“ Mower & Trimmer | – |
How we selected 144cc mowers
We identified these models by scanning Amazon listings for the 144cc engine displacement spec. This measurement indicates the total volume swept by the pistons, which generally correlates with torque and cutting power for gas push mowers. We included only products where the listing explicitly stated this engine size in the title or feature list.
We ordered the results by availability first, then by overall rating weighted by review count, and finally by how many guide criteria the specs met. We selected one variant per product family to avoid duplicates. All details come directly from the published specifications. We did not physically handle these units.
How to choose the right 144cc mower
Match cutting width to yard size
Most models in this guide feature a 21-inch cutting width. This wider deck allows you to cover more ground per pass, which is efficient for medium to large yards. The SENIX model offers a narrower 17-inch cut. You should choose the narrower option if your yard has many tight obstacles or narrow pathways. A wider deck reduces the number of passes required, saving time during mowing sessions. Check the spec sheet to confirm the exact deck size before purchasing.
Decide between push and self-propelled
All mowers listed here are push models. You will need to provide the physical effort to move the machine across the lawn. This design is lighter and often more affordable than self-propelled versions. The PowerSmart 21-Inch 140cc Gas Push Mower weighs 31.8 pounds. If you have a flat yard and good fitness, a push mower is sufficient. Steep hills or large properties might require a self-propelled alternative not found in this specific 144cc selection.
Check included equipment for extra tasks
Several bundles include additional tools like trimmers or edgers. The PowerSmart 21-Inch Push Gas Mower Kit comes with an edger and brush cutter. This is useful if you want to trim edges and clear weeds without buying separate gear. The SENIX model includes a 26.5cc string trimmer. Verify the included equipment list in the product attributes. Bundles offer versatility for complete yard maintenance, while standalone mowers are better if you already own other tools.
Review mowing functions and discharge options
Mowing functions determine how clippings are handled. The PowerSmart 21-Inch 140cc model offers 3-in-1 functionality. This usually includes mulching, bagging, and side-discharge options. Other models may offer 2-in-1 setups, focusing on mulching and side-discharge. Choose a 3-in-1 system if you need flexibility to dispose of clippings in different ways. Mulching returns nutrients to the soil, while bagging keeps the lawn clean. Check the attributes section to see which functions are supported.
Consider weight and maneuverability
Weight affects how easy the mower is to push and store. The PowerSmart 21-Inch 144cc Gas Push Mower weighs 31.8 pounds. The SENIX model is lighter at 25.6 inches in length, but weight specs are not always listed. Heavier kits, like the PowerSmart 21-Inch Gas Mower and Trimmer Combo, weigh 62 pounds. This includes the trimmer attachment. A lighter mower is easier to maneuver around obstacles. Consider storage space and physical strength when comparing the weights of different models.
Frequently asked questions
Are all 144cc mowers self-propelled?
No. Most models in this list are push mowers. The PowerSmart and SENIX options require you to push them manually. This design choice often results in lighter weight and lower cost. You should expect to provide the physical effort to move the deck across your lawn.
Which mower has the widest cutting width?
Several models feature a 21-inch cutting width. This includes the PowerSmart 21-Inch 140cc Gas Push Mower and the 21-Inch Push Gas Mower Kit. The SENIX model has a narrower 17-inch cut. A wider deck allows you to cover more ground with each pass.
Do these mowers include a string trimmer?
Some models come as kits with additional tools. The PowerSmart 21-Inch Push Gas Mower Kit and the PowerSmart 21-Inch Gas Mower and Trimmer Combo both include edgers or brush cutters. The SENIX bundle adds a 26.5cc string trimmer. Other models are sold as standalone mowers.
What is the lightest 144cc mower on the list?
The PowerSmart 21-Inch 140cc Gas Push Mower is the lightest option. It weighs 31.8 pounds. In comparison, the PowerSmart 21-Inch Gas Mower and Trimmer Combo weighs 62 pounds. The standard 21-Inch 144cc Gas Push Mower weighs 44 pounds. Lighter units are easier to maneuver.
Does the SENIX mower have side discharge?
The data does not specify the mowing functions for the SENIX 20" 144cc Gas Mower with Trimmer. It only lists the cutting width and engine type. Other models offer 3-in-1 or 2-in-1 functions, which typically include mulching, bagging, or side discharge. You should check the manual for SENIX specifics.
Is the SENIX mower a 4-stroke engine?
The provided specifications do not list the engine stroke for the SENIX model. However, one PowerSmart model is explicitly identified as a 4-stroke engine. Most modern 144cc gas mowers use 4-stroke engines, but you should verify this detail in the SENIX user manual before purchasing.
Can I use the PowerSmart kit for edging?
Yes. The PowerSmart 21-Inch Push Gas Mower Kit includes an edger and brush cutter. The PowerSmart 21-Inch Gas Mower and Trimmer Combo also includes these tools. These attachments allow you to trim edges and clear brush without buying separate equipment. This makes the kits practical for complete yard care.
What are the dimensions of the SENIX mower?
The SENIX 20" 144cc Gas Mower with Trimmer measures 21.8 inches in width, 13 inches in height, and 25.6 inches in length. These compact dimensions may make it easier to store in a small garage. The height is notably lower than some other models in this guide.
