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
$379.98
Price: $379.98
(as of Aug 10, 2025 08:22:56 UTC – Details)
Product Description
SELF-PROPELLED
Self-propelled single speed，Front wheel drive makes getting the job done easier
Mulch, Bag, Side Discharge
3-IN-1 versatility for lawn cutting flexibility. Equipped with steel deck for durability.
CUTTING HEIGHT ADJUSTMENT
6-position manual height adjustment tailors grass cutting height from 1.25 inches to 3.75 inches.
21 INCH STEEL BLADE
Less mowing time
1 3-IN-1
2 CUTTING HEIGHT ADJUSTMENT
3 21 INCH STEEL BLADE
【Easy Yard Maintenance】21-inch Cutting width gas lawn mower, effortlessly tackling small to medium yards.
【Powerful Engine】Gas 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 Adjustment】The 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
Customers say
Customers find the lawn mower performs well and is easy to assemble, taking about 5 minutes to set up. The mower is lightweight and easy to maneuver, with one customer noting it can be pushed by a 120-pound woman, while another mentions it rolls well over rough terrain. They appreciate its quick start capability, requiring just one or two pulls to start, and its cutting performance, with one customer noting it cuts through thick grass. The build quality receives mixed feedback, with some finding it well-made while others report cheap parts that break easily. Customers consider it worth the purchase price.
8 reviews for 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
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$379.98
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¸
john holley –
Excellent mower
Reliable, easy to use and cuts well. Two years old and used each week in the tropics. Good size for most all terrains.
BirdMan –
Great value : Powerful, Light weightâ¦. which could lead to a shipping issue.
This lawnmower has a quality engine from Briggs & Stratton, though small with 125CCâs, it is very STRONG and capable. The deck of the mower is very light weight due to the thickness of the steel and the plastics used. Itâs light weight makes it easy to push, lift, and with the strong little motor even cuts high grass. (Just be aware you may get yours damaged in shipping.)The mower I received had the deck was bent-in on one side from shipping where the blade was literally touching the deck and would not turn. *As you can see from the pictures, I used a small Bottle-Jack to bend it back and the machine works great!!! Again⦠not âTop of the lineâ but starts on one or two pulls and get the job done at a reasonable price!!
Jamie B –
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 Iâve 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 donât 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.
Bernard Djevalikian –
motor started with first PULL..
Tha product came the date promised. Used the machine rightway. Worked with no problem. I am happy with this purchase.The motor started with the first Pull.
William Sullenger –
terrible customer support/warranty support
Customer support is really, really bad. The frame for the grass catcher had a faulty weld and it broke on my first use. I immediately filled out the support request form on the Senix website providing all warranty information. I also emailed them pictures of the faulty weld and described the situation and provided a picture of my Amazon purchase. I purchased this mower over two months ago and after 10 attempts at getting this resolved, they are asking for all the proof/documentation again. Weeks can pass before I get a response, if I get a response at all. I’m beyond frustrated.
Hatchet G. –
Easy assembly.
It started on the 1st pull!Very nice lawn mover ,hope it last .Super easy to assemble,(4 screws) add the oil that comes with the package ,regular gas ,prime 3 times and go.!!
luke –
A very nice mower for the price!!!
Fired right up! Very easy to put together. Cuts the grass like a champ!!! Our grass was about 5 inches when this mower arrived and drove right thru it!! Highly recommend!!!!