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SENIX LSSG-M9 21-inch Gas Self-Propelled Lawn Mower - 140 cc 4-Cycle Briggs & Stratton Engine, Bagging, Mulching, and Side Discharge, 6-Position Lever Height Adjustment

  • Based on 555 reviews
Condition: New
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Availability: Only 7 left in stock, order soon!
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Arrives Wednesday, Oct 8
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Style: 3-in-1 Self-propelled


Features

  • Easy Yard Maintenance21-inch Cutting width gas lawn mower, effortlessly tackling small to medium yards.
  • Powerful EngineGas lawn mower is powered by a reliable Briggs & Stratton 140 cc gas powered engine that is designed to provide longer engine life, low vibration, and easy maintenance; Prime N' Pull start makes it easy to start the mower every time
  • 3-In-1 Lawn Mower 3-in-1 steel deck with mulching, side discharge, and rear bagging provides versatile mowing options; 16-gallon bagger is included; Ergonomic handle maximizes user comfort during use
  • Cutting Height AdjustmentThe 6-position dual-lever height adjustment from 1.25-inch to 3.75-inch ensures you get the perfect cut every time; 8" front and 11" rear wheels provide great maneuverability through rough terrain and uneven surfaces
  • What's in the Box Self-propelled single speed lawn mower (front wheel drive) includes engine oil, mulch plug, side discharge chute, and 16-gallon bagger. All SENIX gas lawn mowers are backed by our 2-year limited warranty for your peace of mind

Brand: SENIX


Power Source: Gasoline-Powered


Material: Alloy Steel


Color: Blue


Style: 3-in-1 Self-propelled


Item Weight: 55 Pounds


Cutting Width: 21.0


Operation Mode: Automatic


Product Dimensions: 33"D x 23"W x 16"H


UPC:


Brand: SENIX


Power Source: Gasoline-Powered


Material: Alloy Steel


Color: Blue


Style: 3-in-1 Self-propelled


Item Weight: 55 Pounds


Cutting Width: 21.0


Operation Mode: Automatic


Product Dimensions: 33"D x 23"W x 16"H


UPC: 843212102762


Maximum Adjustable Cutting Height: 9.53 Centimeters


Minimum Adjustable Cutting Height: 3.18 Centimeters


Manufacturer: SENIX TOOLS


Item Weight: 55 pounds


Item model number: LSSG-M9


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Oct 8

This item is non-returnable:

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

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Top Amazon Reviews


  • Mean green mowing machine!
Style: 2-in-1 Push 11-Inch Rear Wheels
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. ⭐️⭐️⭐️⭐️⭐️ ... show more
Reviewed in the United States on August 3, 2025 by Forlorn Wanderer

  • Make sure you register your 2 year warranty!
I purchased this mower last June and it has been amazing for the cost, light weight does a fantastic job mowing and evidently the manufacturer is local to me. Only issue I’ve had is the throttle cable broke but the mower has a 2 year warranty that I registered. I called their customer service hoping to get the part. Sounds like they don’t make this mower anymore or the part at least so they sent me a replacement mower at no cost. I even got an upgrade because the exact model was out of stock. Super easy and friendly customer service. ... show more
Reviewed in the United States on August 5, 2025 by Jamie B

  • Tough luck
Style: 3-in-1 Self-propelled
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!🙂 And powerful. DLB of Lubbock Texas ... show more
Reviewed in the United States on September 2, 2025 by David Billingsley

  • Cuts well, easy to assemble, but possible* motor issue
Style: 2-in-1 Push 11-Inch Rear Wheels
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 breeze—just tighten a few screws, add oil and gas, and you’re good to go. Assembly-wise, I’d give it five stars. The engine runs well for a 125cc motor. It’s 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. I’m hoping this was just a break-in quirk and not a recurring problem. Other than that, I’m satisfied with the mower’s performance. If the motor holds up like my last Briggs & Stratton, which lasted five years, I’ll consider it a great purchase. ... show more
Reviewed in the United States on July 17, 2025 by Chris Alicea Chris Alicea

  • Stopped working after a year with little use; no customer
Bought this new in June 2024, used it about half a dozen times, and now it will start but will nit stay running. I have no idea why and I spent about an hour trying to get it to stay running. There is no customer support. A message to the manufacturer’s website 2 days ago had not been acknowleged in any way. Calls to the manufacturer’s customer support number go straight to a strange recording with no option to communicate with a person. I would not recommend this product, which cost me $259 a little over a year ago. ... show more
Reviewed in the United States on August 26, 2025 by Amazon Customer

  • 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. ... show more
Reviewed in the United States on September 9, 2025 by Don s.

  • Very Pleased
I find this lawn mower to be a great value. It is light weight and so far, has held up great. It was also easy and quick to assemble out of the box. I am finding that this machine is also saving me time over my last push lawn mower.
Reviewed in the United States on September 7, 2025 by The Tally Ho

  • 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. ... show more
Reviewed in the United States on September 17, 2025 by Letisha Boyd Letisha Boyd

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