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Finding the best SENIX lawn mowers with mulching requires looking at the published specs. We compared 4 models to help you choose the right machine for your yard. The SENIX 22-Inch 170cc Self-Propelled Gas Mower leads this list. Its 22-inch cutting deck covers more ground per pass than the other options. This wider path makes it efficient for small to medium yards. All picks are ranked strictly by the specifications on their listings. Use this guide to decide which mower fits your space and needs.
Match deck width to your yard size
Choose the 22-inch deck for faster coverage on small to medium yards. Select the 21-inch models for tighter maneuverability or lighter handling. All options feature self-propelled drive and 170cc engines, ensuring consistent mulching performance. The 140cc variant offers a lighter alternative for those prioritizing ease of movement over maximum power.
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | SENIX 22-Inch 170cc Self-Propelled Gas Mower Best overall | Small to medium yards needing a 22-inch deck | |
| 2 | SENIX 21-Inch 170cc Self-Propelled Gas Mower Best budget | flat yards up to 1/3 acre needing mulching | |
| 3 | SENIX 21-Inch Self-Propelled Gas Mower Also great | Mulching and bagging on flat to moderate slopes | |
| 4 | SENIX 21-Inch Gas Self-Propelled Mower Best 140cc | small to medium yards needing mulching |
The best fit for you
- You need the widest cutting path for small yards – SENIX 22-Inch 170cc Self-Propelled Gas Mower – It has a 22-inch deck and 170cc engine.
- You want the lightest mower for flat lawns – SENIX 21-Inch Gas Self-Propelled Mower – It weighs only 55 pounds with a 140cc engine.
- You prefer a compact design for easy storage – SENIX 21-Inch Gas Self-Propelled Mower – It is 33 inches long and 16 inches high.
SENIX 22-Inch 170cc Self-Propelled Gas Mower
Best for: Small to medium yards needing a 22-inch deck
- 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 self-propelled mower features a 22-inch cutting deck and a 170 cc 4-cycle engine. It offers 6 height positions from 1.25 to 4 inches. The unit includes a 19-gallon bagger and mulch plug. It weighs 72.8 pounds. This model suits small to medium yards. You get efficient coverage with rear-wheel drive. The foldable handle aids storage.
- 22-inch cutting width for faster coverage
- 170 cc 4-cycle OHV engine
- 6-position height adjustment lever
- Includes 19-gallon bagger and mulch plug
- Heavier at 72.8 pounds than 21-inch competitors
- Single-speed drive limits terrain control
- 170 cc engine is smaller than 201 cc options
- You need a wider 22-inch deck
- You want a complete bagging kit included
- You prefer a single-speed self-propelled drive
- You require a 21-inch deck size
- You need variable speed control
- You prefer a lighter unit under 70 pounds
Verdict: SENIX 22-Inch 170cc Self-Propelled Mower fits users who want a wider cutting path and a complete package. It is ideal for small to medium yards where the extra weight is manageable.
SENIX 21-Inch 170cc Self-Propelled Gas Mower
Best for: flat yards up to 1/3 acre needing mulching
- 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 170 cc gas engine and a 21-inch steel deck. It offers 6 height positions from 1.25 to 3.75 inches. The 3-in-1 system includes mulching, side discharge, and bagging. You get a 1.7-bushel bagger for collection. It weighs 61.7 pounds and drives itself via FWD. This model suits users needing reliable mulching for small to medium yards.
- 170 cc 4-cycle OHV engine delivers 3.8 HP
- 21-inch cutting width with durable steel deck
- 6-position height adjustment from 1.25 to 3.75 inches
- 3-in-1 mulching, side discharge, and bagging system
- Includes 1.7-bushel collection bagger
- Front-wheel drive limits traction on steep slopes
- 61.7-pound weight is heavier than lighter alternatives
- 1.7-bushel bag capacity is smaller than larger models
- You need a self-propelled mower for flat yards up to 1/3 acre
- You want mulching capability with side discharge options
- You prefer a 21-inch cutting width for manageable maneuverability
- You require rear-wheel drive for steep or uneven terrain
- You need a cutting width larger than 21 inches
- You prefer a bag capacity exceeding 1.7 bushels
Verdict: SENIX 21" Self-Propelled Gas Mower is a practical choice for homeowners with flat yards up to 1/3 acre who need reliable mulching and a manageable 21-inch deck. Its front-wheel drive and moderate weight make it ideal for straightforward mowing tasks.
SENIX 21-Inch Self-Propelled Gas Mower
Best for: Mulching and bagging on flat to moderate slopes
- 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 gas mower features a 21-inch steel deck and a 170cc 4-cycle engine delivering 3.8 HP. It offers 6 height adjustments from 1.25 to 3.75 inches and supports mulching, bagging, and side discharge. The front-wheel drive system aids maneuverability on uneven terrain. You get a 16-gallon bag and ergonomic handles. It suits homeowners managing up to 1/3 acre with self-propelled efficiency.
- 170cc 4-cycle engine provides 3.8 HP and 6.5 ft-lb torque
- 21-inch steel deck supports mulching, bagging, and side discharge
- 6-position height adjustment ranges from 1.25 to 3.75 inches
- Front-wheel drive with 11-inch rear wheels aids slope handling
- Front-wheel drive offers less traction on steep slopes than rear-wheel drive
- 170cc engine displacement is lower than the 170cc models in other picks
- You need a self-propelled mower for lawns up to 1/3 acre
- You want 3-in-1 mulching, bagging, and side discharge options
- You prefer front-wheel drive for easier maneuverability on flat ground
- You require rear-wheel drive for steep hill climbing
- You need a cutting width larger than 21 inches
- You prefer electric power sources over gas engines
Verdict: SENIX 21-Inch Gas Lawn Mower fits homeowners with moderate-sized yards who value mulching flexibility and easy handling. It delivers reliable performance for flat to gently sloping lawns up to 1/3 acre.
SENIX 21-Inch Gas Self-Propelled Mower
Best for: small to medium yards needing mulching
- 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 21-inch self-propelled mower features a 140cc Briggs & Stratton engine. It offers 3-in-1 mulching, bagging, and side discharge capabilities. The 6-position height adjustment ranges from 1.25 to 3.75 inches. You get a 16-gallon bagger and mulch plug included. It suits small to medium yards needing reliable mulching performance.
- 140cc Briggs & Stratton 4-cycle engine
- 21-inch steel cutting deck
- 6-position height adjustment
- Includes 16-gallon bagger and mulch plug
- Self-propelled front-wheel drive
- 140cc engine displacement is lower than the 170cc options on this list
- 55-pound weight is heavier than lighter alternatives
- Single-speed drive limits speed control compared to variable speed models
- You need a dedicated mulching mower for small to medium yards
- You prefer the reliability of a Briggs & Stratton engine
- You want a complete package with bagging and mulching attachments
- You require variable speed drive for steep or uneven terrain
- You need more than 140cc of engine power for thick grass
- You are looking for a lighter mower for easy storage
Verdict: SENIX 21-Inch Gas Mower 140cc is a solid choice for homeowners who prioritize engine reliability and mulching versatility over maximum power or speed control. It fits those with moderate lawns who value a complete accessory package.
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 21-Inch Gas Self-Propelled Mower |
|---|---|---|---|---|
| Cutting Width | 22-inch | 21 in | 21 in | 21-inch |
| Drive Type | Self-propelled | Self-propelled, FWD | Self-propelled, front-wheel drive | Self-propelled |
| Mowing Functions | 3-in-1 (mulching, discharge, bagging) | 3-in-1 (mulch, bag, side discharge) | 3-in-1 | 3-in-1 (mulching, discharge, bagging) |
| Motor Type | 170 cc 4-cycle OHV | 170 cc 4-cycle OHV gas | 170cc 4-cycle OHV | 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 | 6-position (1.25-inch to 3.75-inch) |
| Power Type | 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 | 33 × 23 × 16 inches |
| Weight | 72.8 pounds | 61.7 pounds | 61.7 pounds | 55 pounds |
| Size | 22INCH-170CC | 21 Inch-170cc-6 Position | 21-Inch Gas-Powered | 21-inch |
| Color | Blue | Blue | Blue | Blue |
| Model | LSSG-H4 | A025054-A | LSSG-M10-III | LSSG-M9 |
How to choose the right SENIX mower
Select the right deck width
Match your cutting deck to your yard size and storage space. A 22-inch deck, like the top-ranked model, covers more ground per pass, which reduces mowing time on small to medium lawns. However, the extra width requires more turning room. The 21-inch models offer tighter maneuverability around obstacles and are easier to store in compact garages. Check your available space and obstacle density before deciding. Wider decks do not always mean better performance if you cannot turn the machine effectively.
Check engine displacement for power
Engine displacement indicates the power available to drive the blade and self-propelled system. Most SENIX models here use 170cc engines, providing robust performance for thick or wet grass. One option features a 140cc engine, which is sufficient for moderate lawns but may struggle with heavy growth. If you have dense turf, stick with the 170cc variants. If your grass is well-maintained and you prioritize a lighter machine, the 140cc model is a practical choice. Compare these numbers to ensure adequate power for your specific grass type.
Consider weight for handling
Weight affects how easy the mower is to push and maneuver. The 22-inch model weighs 72.8 pounds, offering stability but requiring more effort to lift or store. The 21-inch models weigh 61.7 pounds, making them easier to handle for many users. The lightest option is the 140cc model at 55 pounds, which is ideal for users who need a lighter machine for flat yards. Heavier mowers may feel more solid on slopes, but lighter ones reduce fatigue. Choose a weight you can comfortably manage during long mowing sessions.
Verify mulching capabilities
All SENIX mowers in this guide support mulching, but you should confirm the specific function set. Look for models that list mulching alongside bagging and side discharge. This 3-in-1 capability allows you to switch between leaving clippings on the lawn, collecting them, or throwing them aside. Ensure the mower you choose includes the mulching kit or configuration required for your yard. Consistent mulching improves soil health by returning nutrients. Verify that the deck design supports efficient clippings recutting for a clean finish.
Assess drive type and slope
All listed SENIX mowers feature self-propelled drive, which helps you push the machine without excessive effort. This is crucial for any yard with even slight slopes. Self-propelled systems reduce physical strain and help maintain a consistent mowing speed. Front-wheel drive is common in these models, providing good traction on flat to moderately sloped terrain. Check if the drive type matches your yard's topography. Self-propelled mowers are generally easier to use than push mowers, especially on larger properties or uneven ground.
Frequently asked questions
Which SENIX mower has the widest cutting deck?
The SENIX 22-Inch 170cc Self-Propelled Gas Mower features the widest cutting deck at 22 inches. This broader path allows you to cover more ground per pass compared to the 21-inch models. It is ideal for small to medium yards where you want to reduce mowing time.
What is the lightest SENIX mulching mower on this list?
The SENIX 21-Inch Gas Self-Propelled Mower is the lightest option, weighing only 55 pounds. It features a 140cc engine and a compact design that is 33 inches long. This lower weight makes it easier to maneuver and store in tight spaces.
Do all these SENIX mowers have self-propelled drive?
Yes, all four SENIX models listed here feature self-propelled drive systems. This means the mower moves forward on its own, reducing the physical effort required to push it. You can focus on steering and mulching rather than pushing the machine across your lawn.
Which model is best for flat yards up to 1/3 acre?
The SENIX 21-Inch 170cc Self-Propelled Gas Mower is best suited for flat yards up to 1/3 acre. It offers a manageable 21-inch deck and front-wheel drive for straightforward handling. Its moderate weight of 61.7 pounds ensures stable performance on flat terrain.
Can these mowers bag grass clippings as well as mulch?
Yes, all four models support mulching, bagging, and side discharge functions. This 3-in-1 capability gives you flexibility in how you handle grass clippings. You can choose to mulch for lawn health, bag for a clean look, or discharge for quick clearing.
Which SENIX mower has the highest engine displacement?
Three models share the highest engine displacement of 170cc. These include the 22-inch top pick and two of the 21-inch models. The fourth option features a 140cc engine. Higher displacement generally provides more power for cutting through thicker grass.
What are the dimensions of the most compact SENIX mower?
The SENIX 21-Inch Gas Self-Propelled Mower (Model LSSG-M9) is the most compact. It measures 33 inches in length, 23 inches in width, and 16 inches in height. These smaller dimensions make it easier to store in garages or sheds with limited space.
