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
Condition: New
$560.61
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This item is eligible for return within 30 days of receipt
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
In Stock.
Arrives
Monday, Nov 2
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At a glance
- Condition
- New
- Cutting width
- 21 in
- Set
- 140CC Gas Lawn Mower w/B&S Engine
- Model
- LSSG-M9
- Dimensions
- 33"D x 23"W x 16"H
- Weight
- 55 lb
- Color
- Blue
Features 5
- 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
Description
Self-propelled single speed，Front wheel drive makes getting the job done easier 3-IN-1 versatility for lawn cutting flexibility. Equipped with steel deck for durability. 6-position manual height adjustment tailors grass cutting height from 1.25 inches to 3.75 inches. Less mowing time
Specs 25
| Brand | SENIX |
|---|---|
| Power Source | Gasoline-Powered |
| Material | Alloy Steel |
| Color | Blue |
| Style | 3-in-1 Self-propelled |
| Item Weight | 55 pounds |
| Cutting Width | 21 inches |
| Operation Mode | Automatic |
| Product Dimensions | 33"D x 23"W x 16"H |
| Number of Items | 1 |
| Brand Name | SENIX |
| Model Number | LSSG-M9 |
| UPC | 843212102762 |
| Unit Count | 1 Count |
| Number of Packs | 1 |
| Manufacturer | SENIX TOOLS |
| Item Type Name | walk-behind-lawn-mowers |
| Manufacturer Part Number | LSSG-M9 |
| Item Dimensions D x W x H | 33"D x 23"W x 16"H |
| Wheel Size | 8 inches |
| Maximum Adjustable Cutting Height | 3.75 inches |
| Minimum Adjustable Cutting Height | 1.25 inches |
| Number of Positions | 6 |
| Material Type | Alloy Steel |
| Style Name | 3-in-1 Self-propelled |
No specs match.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Monday, Nov 2
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Good mower for the money
Cutting width: 21 Inches
Set name: 140CC Gas Lawn Mower w/B&S Engine
good lawn mower, starts easy, and has plenty of power and pulls great when engaging the wheels. the discharge bag is easy to mount, and I like the mulching of the mower, no complains I've been using it all spring and summer
Reviewed in the United States on July 12, 2026 by Jordan
So satisfied!
Cutting width: 21 Inches
Set name: 140CC Gas Lawn Mower w/B&S Engine
New and works great! Also seller has excellent customer service!
Reviewed in the United States on August 22, 2026 by Rhonda
Great mower if purchesed on sale.
Cutting width: 21 Inches
Set name: 140CC Gas Lawn Mower w/B&S Engine
Great mower for the price I paid for this (200 less than current). 4 stars for Briggs & Stratton engine. I would stay away from china engines. 4 stars for power. 3 stars for bagging, grass. 2.5 stars for leaves- too much is not bagged and just blown around. 3.5 stars for mulching but doesn't do well in tall grass.. 4 stars for ease of starting. 3.5 for self propel. I definitely would by again for the price I paid but I would not buy at current price, I would go to Walmart or HomeDepot.
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Reviewed in the United States on March 29, 2026 by Greg Tex
Broken. Can't return or refund.
Cutting width: 22.0 Inches
Set name: 201CC Variable Speed Mower w/battery ...
I would not buy this item again. The mower is the only part I have used but the handle will fall off while I am mowing... losing the screws in the yard. I have had to replace them twice in just a month. And I am not able to return it. I am very disappointed as this was an expensive purchase. I should have purchased from a local store even if the cost was higher because now I am stuck with a product o can't use. Very sad about this Amazon purchase.
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Reviewed in the United States on September 9, 2026 by Linda Houk
Single Use Only
Cutting width: 21 Inches
Set name: 140CC Gas Lawn Mower w/B&S Engine
I was wary but had no option but to order a mower online. It worked the first time I used it. Now I tried the second time and OF COURSE it’s no longer returnable and won’t start. So now I’m paying for a lawn mower I can’t use and likely can’t sell.
Reviewed in the United States on September 28, 2025 by Sherylyn Klair
Great mower!
Cutting width: 21 Inches
Set name: 140CC Gas Lawn Mower w/B&S Engine
Works great! Self propelled can hold one handed and walk along very easy! Only downside is maybe the assembly but not very complicated or difficult.
Reviewed in the United States on May 4, 2026 by Aaron
Outstanding Customer Service
Cutting width: 21 Inches
Set name: 140CC Gas Lawn Mower w/B&S Engine
The first mower didn't work. However, the customer service was outstanding. They sent us a replacement and it works wonderfully. It is easy to operate and so far we are very pleased.
Reviewed in the United States on November 15, 2025 by Sheila R.
Senix Lawn mower
Cutting width: 21 Inches
Set name: 140CC Gas Lawn Mower w/B&S Engine
It’s easy to use and start the lawn mower. The height is adjustable. It’s durable like other brands. However, it is not as powerful like other brands I use. It has a grass bag and collect most of my grass and saves a lot of my time blowing. The self propelled part is a little slow and I have to do a lot of pushing to speed up. My house is 1/4 of acre and maybe too much for this lawn mower. Overall pretty good for small land and price I bought before was good deal on thanksgiving sale.
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Reviewed in the United States on June 12, 2026 by Ms. Sunshine