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Finding the best SENIX lawn mowers with side discharge requires focusing on the specifications listed by the manufacturer. We compared 5 models to help you choose based on engine power, cutting width, and drive type. The SENIX 22-Inch 170cc Self-Propelled Gas Mower leads the list because its 170cc engine and 22-inch deck provide substantial power and coverage for medium yards. All picks are ranked strictly by the data published on their product pages. This guide helps you decide which mower matches your yard size and mowing needs.
Match cutting width to your yard size
You should choose your mowing width based on your lawn dimensions. The top pick features a 22-inch deck for medium yards, while other models offer 21-inch or 20-inch cuts. Wider decks cover more ground per pass. Select the size that matches your space to ensure efficient side discharge and manageable operation.
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | SENIX 22-Inch 170cc Self-Propelled Gas Mower Best overall | Medium yards needing wide 22-inch cuts | |
| 2 | SENIX 21-Inch 170cc Self-Propelled Gas Mower Best premium | 1/3-acre flat yards needing side discharge | |
| 3 | SENIX 21-Inch Self-Propelled Gas Mower Best budget | Front-wheel drive side discharge on flat lawns | |
| 4 | SENIX 20-Inch 125cc Gas Push Lawn Mower Best 20-inch | small yards needing a 20-inch cut | |
| 5 | SENIX 21-Inch Gas Self-Propelled Mower Best 140cc | small to medium yards needing side discharge |
The best fit for you
- You need the widest cutting deck for medium yards – SENIX 22-Inch 170cc Self-Propelled Gas Mower – Its 22-inch cutting width covers more grass per pass than the other models.
- You want a premium mower with a steel deck – SENIX 21-Inch 170cc Self-Propelled Gas Mower – This model features a steel deck and self-propelled drive for reliable performance.
- You need a lightweight mower for flat lawns – SENIX 21-Inch Gas Self-Propelled Mower – Weighing 55 pounds, it is the lightest self-propelled option on this list.
- You want the smallest mower for small yards – SENIX 20-Inch 125cc Gas Push Lawn Mower – At 49 pounds with a 20-inch deck, it is the most compact choice.
SENIX 22-Inch 170cc Self-Propelled Gas Mower
Best for: Medium yards needing wide 22-inch cuts
- Mowing Functions
- Mulching, Bagging, Side Discharge
- Cutting Width
- 22-inch
- Drive Type
- Self-propelled
- Motor Type
- 170 cc 4-cycle OHV
- Height Adjustments
- 6-position (1.25" to 4")
- Power Type
- Gas
This SENIX mower features a 22-inch cutting deck and a 170 cc 4-cycle OHV engine. It offers side discharge, mulching, and bagging capabilities. The self-propelled rear-wheel drive simplifies operation on small to medium yards. You get six height settings from 1.25 to 4 inches. The package includes a 19-gallon bagger and a washout port for easy cleaning. It is a solid choice for users needing a wider cut and robust power.
- 22-inch cutting deck covers more ground per pass
- 170 cc engine provides strong power for thick grass
- Includes 19-gallon bagger for clean side discharge
- Single-lever height adjustment offers six positions
- Integrated washout port simplifies deck maintenance
- 72.8-pound weight is heavier than lighter competitors
- Single-speed drive offers less speed control than variable options
- 140 cc engine options in the list are lighter and more compact
- You want a wider 22-inch cut for faster mowing
- You need a powerful 170 cc engine for tough grass
- You prefer side discharge with a large 19-gallon bagger
- You need a lightweight mower under 70 pounds
- You prefer variable speed control for precise handling
- You only have a small yard and need a 20-inch deck
Verdict: SENIX 22-Inch 170cc Self-Propelled Mower fits users who prioritize cutting width and engine power over lightweight portability. It is ideal for medium yards where a 22-inch deck speeds up the job.
SENIX 21-Inch 170cc Self-Propelled Gas Mower
Best for: 1/3-acre flat yards needing side discharge
- Mowing Functions
- 3-in-1, Mulching, Bagging, Side Discharge
- Cutting Width
- 21 in
- Drive Type
- Self-propelled, FWD
- Motor Type
- 170 cc 4-cycle OHV gas
- Height Adjustments
- 6 positions, 1.25-3.75 in
- Engine Displacement
- 170cc
This SENIX mower features a 21-inch steel deck and a 170 cc 4-cycle OHV engine producing 3.8 HP. It offers self-propelled front-wheel drive and six cutting height positions from 1.25 to 3.75 inches. The 3-in-1 system includes side discharge, mulching, and rear bagging with a 1.7-bushel bagger. It is designed for yards up to 1/3 acre.
- 170 cc 4-cycle OHV engine delivers 3.8 HP and 6.5 ft-lb torque
- 21-inch high-strength steel cutting deck for durability
- Self-propelled front-wheel drive reduces user fatigue
- Six height adjustments ranging from 1.25 to 3.75 inches
- Includes 1.7-bushel rear bagger for side discharge and mulching
- 140 cc engines on other list models offer less power
- 61.7-pound weight is heavier than lighter competitors
- 1.7-bushel bagger capacity is smaller than larger options
- You need a self-propelled mower for yards up to 1/3 acre
- You prefer side discharge or mulching capabilities
- You want a durable steel deck with six height settings
- You have a yard larger than 1/3 acre
- You require rear-wheel drive for steep terrain
- You prefer a lighter mower under 60 pounds
Verdict: SENIX 21-Inch 170cc Self-Propelled Gas Mower suits homeowners with small to medium flat yards who want reliable power and a steel deck. It fits those who value self-propelled ease and versatile discharge options over maximum bag capacity.
SENIX 21-Inch Self-Propelled Gas Mower
Best for: Front-wheel drive side discharge on flat lawns
- Mowing Functions
- 3-in-1, Mulching, Bagging, Side Discharge
- Cutting Width
- 21 in
- Drive Type
- Self-propelled, front-wheel drive
- Motor Type
- 170cc 4-cycle OHV
- Height Adjustments
- 6 positions, 1.25 to 3.75 inches
- Power Type
- Gas
This SENIX self-propelled mower features a 21-inch cutting width and a 170cc 4-cycle engine. It offers front-wheel drive for easier maneuvering on slopes. The 6-position height adjustment ranges from 1.25 to 3.75 inches. You get 3-in-1 functionality including side discharge. The 61.7-pound weight provides stability during operation.
- 170cc 4-cycle OHV engine delivers 3.8 HP
- Front-wheel drive aids control on uneven terrain
- 6-position height adjustment from 1.25 to 3.75 inches
- Includes 16-gallon rear bag for side discharge and mulching
- Front-wheel drive offers less traction than rear-wheel drive on steep slopes
- 61.7-pound weight is heavier than some competitors
- 170cc engine displacement is lower than the 170cc+ options in other picks
- You need side discharge capability for a 21-inch cut
- You prefer front-wheel drive for easier handling on flat lawns
- You want a 170cc engine for consistent power
- You require rear-wheel drive for steep hills
- You need a lighter mower under 60 pounds
- You prefer a 22-inch cutting width for faster coverage
Verdict: SENIX 21-Inch Self-Propelled Gas Mower fits users who prioritize manageable weight and front-wheel drive for flat to moderate terrain. It provides reliable side discharge performance for medium-sized yards.
SENIX 20-Inch 125cc Gas Push Lawn Mower
Best for: small yards needing a 20-inch cut
- Mowing Functions
- Side Discharge
- Cutting Width
- 20 inches
- Drive Type
- Push
- Motor Type
- 4-cycle gas
- Height Adjustments
- 5-position, 1.25 to 3.75 inches
- Dimensions
- 26.5 × 21.7 × 14 inches
The SENIX 20-inch gas push mower features a Briggs & Stratton 125 cc 4-cycle engine and side discharge. It offers a 20-inch cutting width with five height settings from 1.25 to 3.75 inches. This model suits small to medium yards where you prefer manual control. The steel deck and 49-pound build provide durability. You get a compact unit with a fold-down handle for storage.
- 20-inch steel cutting deck
- Briggs & Stratton 125 cc engine
- 5-position height adjustment
- Side discharge function
- Push drive type requires more effort than self-propelled models
- 125 cc engine is less powerful than the 170 cc or 201 cc engines in other picks
- 5 height settings offer fewer options than the 6-position adjustments found in competitors
- You have a small to medium yard
- You prefer a lighter, manually pushed mower
- You want a side discharge option
- You need self-propelled drive for hills
- You want a wider 21-inch or 22-inch cut
- You prefer a higher horsepower engine
Verdict: SENIX 20-Inch Gas Push Mower fits users who prioritize a manageable 125 cc engine and a 20-inch cut width for smaller lawns. It is a solid choice for those who do not need self-propulsion or a wider deck.
SENIX 21-Inch Gas Self-Propelled Mower
Best for: small to medium yards needing side discharge
- Mowing Functions
- Mulching, Bagging, Side Discharge
- Cutting Width
- 21-inch
- Drive Type
- Self-propelled
- Motor Type
- 140 cc 4-Cycle Briggs & Stratton
- Height Adjustments
- 6-position (1.25-inch to 3.75-inch)
- Power Type
- Gas
This SENIX model features a 21-inch cutting deck and a 140 cc Briggs & Stratton engine. It offers side discharge, bagging, and mulching capabilities. The self-propelled drive and six-position height adjustment suit small to medium yards. You get a 16-gallon bagger and a 2-year warranty. It is a practical option for users who need reliable side discharge performance without the bulk of higher-displacement engines.
- 140 cc Briggs & Stratton 4-cycle engine
- 21-inch steel cutting deck
- Six-position height adjustment from 1.25 to 3.75 inches
- Includes 16-gallon bagger and side discharge chute
- 140 cc engine is smaller than the 170 cc and 201 cc options on this list
- Single-speed self-propelled drive lacks the variable speed found in some competitors
- You need a dedicated side discharge mower for a small to medium yard
- You prefer a lighter 55-pound machine for easier maneuverability
- You want a Briggs & Stratton engine with a 2-year warranty
- You require variable speed control for hilly terrain
- You need more than 140 cc of engine displacement for thick grass
- You are mowing a large yard that demands a 22-inch deck
Verdict: SENIX 21-inch 140cc Gas Mower fits homeowners with small to medium lawns who prioritize a manageable 55-pound weight and a trusted Briggs & Stratton engine over higher horsepower or variable speed features.
Specifications side by side
| Spec | SENIX 22-Inch 170cc Self-Propelled Gas Mower | SENIX 21-Inch 170cc Self-Propelled Gas Mower | SENIX 21-Inch Self-Propelled Gas Mower | SENIX 20-Inch 125cc Gas Push Lawn Mower | SENIX 21-Inch Gas Self-Propelled Mower |
|---|---|---|---|---|---|
| Cutting Width | 22-inch | 21 in | 21 in | 20 inches | 21-inch |
| Drive Type | Self-propelled | Self-propelled, FWD | Self-propelled, front-wheel drive | Push | Self-propelled |
| Mowing Functions | 3-in-1 (mulching, discharge, bagging) | 3-in-1 (mulch, bag, side discharge) | 3-in-1 | Side discharge | 3-in-1 (mulching, discharge, bagging) |
| Motor Type | 170 cc 4-cycle OHV | 170 cc 4-cycle OHV gas | 170cc 4-cycle OHV | 4-cycle gas | 140 cc 4-Cycle Briggs & Stratton |
| Height Adjustments | 6-position (1.25" to 4") | 6 positions, 1.25-3.75 in | 6 positions, 1.25 to 3.75 inches | 5-position, 1.25 to 3.75 inches | 6-position (1.25-inch to 3.75-inch) |
| Power Type | Gas | Gas | Gas | Gas | Gas |
| Engine Displacement | 170cc | 170cc | 170cc | – | 140cc |
| Dimensions | 37.5 × 23.8 × 15.9 inches | 61 × 22.8 × 41.5 inches | 61 × 22.8 × 41.5 inches | 26.5 × 21.7 × 14 inches | 33 × 23 × 16 inches |
| Weight | 72.8 pounds | 61.7 pounds | 61.7 pounds | 49 pounds | 55 pounds |
| Size | 22INCH-170CC | 21 Inch-170cc-6 Position | 21-Inch Gas-Powered | 20 inch 125 cc | 21-inch |
| Color | Blue | Blue | Blue | BLACK+BLUE | Blue |
| Model | LSSG-H4 | A025054-A | LSSG-M10-III | LSPG-L3 | LSSG-M9 |
How to choose the right SENIX mower
Check engine displacement
Engine displacement indicates power potential. Higher cubic centimeters (cc) generally mean more torque for thick grass. You should look for 170cc models if you have dense turf or need to handle heavy clippings efficiently. The top picks feature 170cc engines for robust performance. If your lawn is small or flat, a 125cc or 140cc engine may suffice. A 125cc engine powers the 20-inch push model, which is lighter and easier to maneuver for simple tasks. Match the cc to your grass density for consistent cutting.
Select drive type
Drive type affects how much effort you expend. Self-propelled models move forward on their own, reducing fatigue. This is crucial for slopes or larger areas. Most SENIX options here are self-propelled. The 21-inch models use front-wheel drive for stability on flat ground. If you have a very small, flat yard, a push mower like the 20-inch 125cc model might be enough. However, for most users, self-propulsion makes the job faster and less tiring. Choose based on your terrain difficulty.
Review mowing functions
Mowing functions determine how grass clippings are handled. Side discharge is key for this guide, letting clippings fall to the side. This is ideal for short grass or when you do not want to bag. Many models offer 3-in-1 capabilities, including mulching and bagging. Mulching chops clippings fine for lawn health. Bagging collects debris for a clean look. If you primarily want side discharge, ensure the model supports it. The 20-inch push mower focuses solely on side discharge, simplifying the setup for that specific need.
Assess weight and size
Weight impacts portability and storage. Heavier mowers with larger decks are more stable but harder to lift. The 22-inch self-propelled model weighs 72.8 pounds, offering stability for medium yards. Lighter options, like the 21-inch Briggs & Stratton model at 55 pounds, are easier to maneuver and store. Consider your strength and storage space. A 49-pound push mower is the lightest, suitable for easy transport. Balance the need for a wide deck against the weight you can comfortably handle during operation and storage.
Match deck width to yard
Cutting width determines how many passes you need. Wider decks cover more area per pass, saving time. The 22-inch deck is best for medium yards where efficiency matters. The 21-inch models offer a balance of width and maneuverability. The 20-inch deck is suitable for smaller lawns or tighter spaces. Choose a width that matches your yard size without being too large for your gates or paths. A wider deck speeds up the job but may require more precision around obstacles. Select the width that fits your primary mowing area.
Frequently asked questions
Which SENIX mower is best for medium yards?
The SENIX 22-Inch 170cc Self-Propelled Gas Mower is the top choice for medium yards. Its 22-inch cutting width allows you to cover more ground per pass than narrower models. The 170cc engine provides ample power for consistent cutting. This self-propelled drive helps you maintain a steady pace without excessive effort.
Does the SENIX 21-Inch 170cc model have a steel deck?
Yes, the SENIX 21-Inch 170cc Self-Propelled Gas Mower features a steel deck. This construction offers durability and resistance to impacts compared to plastic alternatives. It also supports three discharge modes: mulching, bagging, and side discharge. The self-propelled drive ensures easy maneuvering across flat terrain.
What is the difference between the 170cc and 140cc SENIX mowers?
The primary difference is engine displacement and weight. The 170cc models, such as the 22-Inch and 21-Inch versions, offer higher power potential for thicker grass. The 140cc SENIX 21-Inch Gas Self-Propelled Mower weighs 55 pounds, which is lighter than the 170cc models. It uses a Briggs & Stratton engine for reliable performance.
Can I use side discharge on the SENIX 20-Inch mower?
Yes, the SENIX 20-Inch 125cc Gas Push Lawn Mower supports side discharge. It is designed for small yards where a 20-inch cut is sufficient. As a push mower, it lacks self-propulsion, so you must provide the walking force. The 125cc engine handles basic mowing tasks effectively.
How much does the SENIX 22-Inch mower weigh?
The SENIX 22-Inch 170cc Self-Propelled Gas Mower weighs 72.8 pounds. This is the heaviest model in the list, reflecting its larger deck and engine. The self-propelled feature compensates for the weight by moving the mower for you. You should ensure your garage or storage space can accommodate its dimensions.
Which SENIX mower is best for flat lawns?
The SENIX 21-Inch Self-Propelled Gas Mower is ideal for flat lawns. It features front-wheel drive, which provides good traction on even surfaces. Weighing 61.7 pounds, it is manageable for most users. It offers side discharge capability along with mulching and bagging options for versatile lawn maintenance.
Does the SENIX 21-Inch 140cc model have variable speed?
The provided specifications do not mention variable speed for the SENIX 21-Inch 140cc Gas Self-Propelled Mower. It focuses on a manageable 55-pound weight and a trusted Briggs & Stratton engine. You should check the manual for specific drive control details if speed adjustment is critical for your needs.
