SENIX LSPG-M4 21-Inch Gas Push Lawn Mower with 125 cc 4-Cycle Briggs & Stratton Engine, Mulching and Side Discharge, 6-Position Dual Lever Height Adjustment
Original price was: $299.00.$239.99Current price is: $239.99.
Price: $299.00 - $239.99
(as of Nov 14, 2025 19:44:59 UTC – Details)
Product description
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2-In-1 Function
Side Discharge
Expertly distributes clippings for a flawlessly manicured lawn.
140 cc Briggs & Stratton Engine
Built with the power to get the job done. Our classic Prime ‘N Pull system makes cold starts easy.
Cutting Height Adjustment
6-position manual height adjustment tailors grass cutting height from 1.25-inches to 3.75-inches.
1 BRIGGS & STRATTON
2 SIDE DISCHARGE
3 125 CC ENGINE
4 HIEGHT ADJUSTMENT
COMPARE SENIX GAS MOWERS
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Customer Reviews
4.3 out of 5 stars 581
4.2 out of 5 stars 385
4.2 out of 5 stars 385
4.3 out of 5 stars 581
4.3 out of 5 stars 228
4.3 out of 5 stars 581
3.7 out of 5 stars 80
Price
$239.99$239.99
$229.99$229.99
$219.00$219.00
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$268.98$268.98
$298.99$298.99
$419.99$419.99
Model
LSPG-M4
LSPG-L6
LSPG-L3
LSPG-M3
LSPG-M6
LSPG-M7
LPSX6-H
Engine
4-Cycle 125 cc E450
4-Cycle 144 cc
4-Cycle 125 cc E300
4-Cycle 125 cc E450
4-Cycle 140 cc E500
4-Cycle 140 cc E550
60V 3-IN-1 8Ah Battery
Drive Type
Push
Push
Push
Push
Push
Push
Push-Self-Propelled
Cutting Options
Mulch, Side-Discharge
Mulch, Side-Discharge
Mulch, Side-Discharge
Mulch, Side-Discharge
Mulch, Side-Discharge
Mulch, Bag, Side-Discharge
Mulch, Bag, Side-Discharge
Deck Type
Steel
Steel
Steel
Steel
Steel
Steel
Steel
Cutting Height Range
6 Positions Dual | 1.25″-3.75″
6 Positions Dual | 1.25″-3.75″
5 Positions | 1.25″-3.75″
6 Positions Dual | 1.25″-3.75″
6 Positions Dual | 1.25″-3.75″
6 Positions Dual | 1.25″-3.75″
7 Positions Dual | 1.5″-4″
Cutting Width
21-Inches
21-Inches
20-Inches
21-Inches
21-Inches
21-Inches
21-Inches
Wheel Size
11-Inches Rear, 8-Inches Front
11-Inches Rear, 8-Inches Front
7-Inches
8-Inches
11-Inches Rear, 8-Inches Front
11-Inches Rear, 8-Inches Front
10-Inches Rear, 8-Inches Front
Foldable
✔
✔
✔
✔
✔
✔
✔
EFFICIENT LAWN MOWING: The SENIX 21-inch gas push mower features a steel deck with a 21-inch cutting width, providing a large cutting area with high durability for small to medium size yards; The fold-down handle allows for easy storage and space-saving
EASY-TO-START QUIET ENGINE: Briggs & Stratton 125 cc 4-cycle E450 engine with Prime n Pull start delivers the power to tackle your job; The 4-stroke engine is eco-friendly with low emissions, low fuel consumption, no mixing of oil and gas, and low noise
VERSATILE CUTTING CAPABILITY: The 2-in-1 durable steel deck allows you to mulch or side discharge; The ergonomic handle maximizes user comfort during use
HEIGHT ADJUSTMENT AND MANEUVERABILITY: 6-position dual-lever height adjustment lets you adjust from 1.25-inches to 3.75-inches to meet the needs of your lawn; Durable 11-inch rear wheels & 8-inch front wheels are designed for easy maneuvering
WHAT’S INCLUDED: The SENIX push lawn mower comes with engine oil for your convenience; Is it backed by our 2-year limited warranty, so you can purchase with confidence
Customers say
Customers find this lawn mower to be of good quality, easy to assemble with no tools required, and appreciate that it starts on the first pull. The mower is lightweight and easy to maneuver, with one customer noting that even a 120-pound woman can push it with ease. While some customers say it works better than an electric mower, others report it stops working after 15 minutes of use, and several customers experienced engine damage with their units breaking on second use.
8 reviews for SENIX LSPG-M4 21-Inch Gas Push Lawn Mower with 125 cc 4-Cycle Briggs & Stratton Engine, Mulching and Side Discharge, 6-Position Dual Lever Height Adjustment
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Original price was: $299.00.$239.99Current price is: $239.99.
Forlorn Wanderer –
Mean green mowing machine!
Fantastic mower!!! This eats through the tallest grass for me so quickly, compared to the whimpy electric one I had a long time ago. Doesn’t eat up too much gas, and runs so well. The sound is somewhat loud, expected for a gas mower, but I don’t care. Highly recommend it. Easy to use, powerful, and superior to Electric mowers. âï¸âï¸âï¸âï¸âï¸
David Billingsley –
Tough luck
The box the mower came in was mangled and wrapped in plastic tape. I had been tracking it’s delivery. I saw it come to Lubbock It was a day early.I was alerted by UPS it was here early. I was excited. But then it went to Illinois.I watched it on the tracking window. They took 2 more days to get back to Lubbock.And I could see the torn up, boxed mower.Oh the mower was tough. It was wrapped plastic tape..The mower was ok, but the small parts were GONE!UPS’ fault. A tribute to the SENIX Mower Though!ðAnd powerful.DLB of Lubbock Texas
Don s. –
Started first pull and performed perfectly as it should
I have been buying used lawn mowers to try to save money. Round up costing me more than this brand new lawn mower would have been the first time. I am completely happy with this mower. Started up on the first poll and performed beautifully. Has a nice height adjustment and a shoot to push the grass away if that’s what you want. It’s sounds absolutely beautiful and is reasonably quiet for a lawn mower. I highly recommend.
Chris Alicea –
Cuts well, easy to assemble, but possible* motor issue
I received the lawnmower today, and I was immediately impressed with how easy it was to get started. The packaging was simple to open, and setup was a breezeâjust tighten a few screws, add oil and gas, and youâre good to go. Assembly-wise, Iâd give it five stars.The engine runs well for a 125cc motor. Itâs not a high-end mower, but for the price, it cuts efficiently and gets the job done. However, I did experience one issue on first use: about 30 minutes into mowing, the engine started producing a bluish-white smoke, which is usually a sign of too much oil. I followed the manual closely upon startup and double-checked the oil level twice before restarting. It smoked again briefly, so I let it cool for an hour. After that, it ran clean, and I was able to finish my yard without any further issues.Iâm hoping this was just a break-in quirk and not a recurring problem. Other than that, Iâm satisfied with the mowerâs performance. If the motor holds up like my last Briggs & Stratton, which lasted five years, Iâll consider it a great purchase.
Mj –
Broke during first use
I was really excited about this mower! It was easy to assemble, and very lightweight. Getting it started was a breeze! It pushed easily and cut nicely. Sadly my mower broke during the first use, after about half the lawn was cut. It was working just fine, then it started sputtering and just shut off. I tried to start it again to no avail. Eventually, I opened the compartments to check and the oil level and gas level were perfectly fine. When I opened the oil reservoir it began smoking profusely. The mower wont start anymore. I am not sure what the issue could be.
new guy –
Great mower
One of the best lawnmower Iâve ever purchased
Letisha Boyd –
Great mower for the price
Delivered on time, didn’t have to assemble anything, just had to screw in the bolts that held the pushing handle. Came with a bottle of oil, you just need a long funnel to fill it. Primed it 3 times and it started up on the first pull. I set my wheels at the 2nd tallest setting and cuts really great. Only issue i had was with they way UPS delivered my mower, box was beat up, like it was dropped and the tape on the box was barely holding the box together.
Brittany Walters –
Indestructible
Iâve had this mower for a year and a half and she is a beast! Iâve put it through everything you can think of and never misses a beat. I even mow the corn stalks down in my garden with it. I havenât even sharpened the blades yet and it cuts like the day I bought it.