SENIX 21-Inch Gas Push Lawn Mower with 140 cc 4-Cycle Briggs & Stratton Engine, Mulching and Side Discharge, 6-Position Dual Lever Height Adjustment (LSPG-M6)
Condition: New
Buy Now, Pay Later
As low as
/ mo
Learn more
- – Up to 36-month term if approved
- – No impact on credit
- – Instant approval decision
- – Secure and straightforward checkout
Ready to go? Add this product to your cart and select a plan during checkout.
Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
Selected Option
Free shipping on this product
Non-returnable item
Learn more
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
Availability:
Only 1 left in stock, order soon!
Arrives
Thursday, Mar 19
Recently Viewed
Size: 21-Inch 140 cc
Features
- EASY YARD MAINTENANCE: The 21-inch cutting width and durability make this gas lawn mower a breeze to use, effortlessly tackling small to medium-size yards and giving you a flawless cut every time
- POWERFUL ENGINE: The 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
- 2-IN-1 LAWN MOWER: The 2-in-1 steel deck offers mulching and side discharge for versatile mowing options; Ergonomic handle maximizes user comfort during use; The unique vortex tunnel deck design and side discharge chute disperse grass clippings evenly
- EASY 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 INCLUDED: The walk-behind lawn mower includes engine oil; Foldable handles provide compact storage for winter; All SENIX gas lawn mowers are backed by our 2-year limited warranty for your peace of mind
Brand: SENIX
Power Source: Gas Powered
Material: Alloy Steel
Color: Blue
Style: 21 Inch-140cc
Item Weight: 48 Pounds
Cutting Width: 21 Inches
Operation Mode: Manual
Product Dimensions: 32.8"D x 22.72"W x 14.88"H
Assembly Required: Yes
Brand: SENIX
Power Source: Gas Powered
Material: Alloy Steel
Color: Blue
Style: 21 Inch-140cc
Item Weight: 48 Pounds
Cutting Width: 21 Inches
Operation Mode: Manual
Product Dimensions: 32.8"D x 22.72"W x 14.88"H
Assembly Required: Yes
UPC: 843212113218
Maximum Adjustable Cutting Height: 3.75 Inches
Global Trade Identification Number: 18
Minimum Adjustable Cutting Height: 1.25 Inches
Manufacturer: SENIX TOOLS
Item Weight: 48 pounds
Item model number: LSPG-M6
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Thursday, Mar 19
This item is non-returnable:
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.
Similar Products
Top Amazon Reviews
Size: 21-Inch 140 cc
****UPDATE**** The sputtering while running, not running, and hard starts are a surprisingly simple fix. During wither storage or transport it seems that the unit was left on its side, this caused the remaining test oil in the motor to find its way to the AIR FILTER. When I finally noticed that my air filter was oil soaked, I cleaned it with a couple drops of dawn dish soap a couple times until no more oil was present. After squeezing out excess water, blowing it with the air compressor, and finishing drying overnight, my mower now starts the FIRST PULL EVERY TIME without even priming. ****ORIGINAL REVIEW**** Arrived a day earlier than expected which was nice. The included oil for initial fill was a nice touch. The deck seems solid overall and the large rear wheels are perfect for my property. That having been said, my initial experience was not without a problem. Started great and ran strong in very deep grass/weeds for about 40 minutes, then it started sputtering like it was low on fuel. It looked like there was still plenty in the tank, but I topped it anyhow. After pulling the cord about 12 consecutive times it finally started again and ran for maybe about 5 minutes before dying and not starting again no matter what I tried. Thankfully, I have good mechanical knowledge. After checking the spark plug I found no problem, the filter was perfectly fine as it should have been. Only next step was to clean the carburetor. After removing and cleaning the carburetor with carb cleaner spray only and reassembly, it took a moment to start, but ran flawlessly afterwards. I'm still not certain that the primer bubble is working as it should since the next day it took a moment to get it started, but once warm it started first pull easily. This is not a problem from Senix, the is a problem from Briggs & Straton. Sad that this is the case as I had higher standards from such a reputable US company. I will be contacting them regarding this Overall, I am happy with my purchase and grateful that it was at such a good price. Also for anyone who has trouble with turning a heavier mower, I feel this is a good option as it isn't too heavy and maneuvers easily.
...
show more
Reviewed in the United States on June 12, 2025 by Spyder1384
Size: 21-Inch 140 cc
I purchased the Senix gas mower for my quarter acre property. It shipped fast and was packaged securely. Assembly was very simple (no tools needed) and it came with engine oil. The mower started on the 1st pull! I’ve used both the side discharge and mulching. The side discharge is easy to install and remove. Both did very well and didn’t have any issue with grass clumping. The height can easily be adjusted. I cut my lawn around 3”. The mower is very light and easy to maneuver. I am very pleased with my purchase!
...
show more
Reviewed in the United States on May 27, 2022 by Jamie
Size: 21-Inch 140 cc
This mower is very easy to assemble and use and comes with the necesssary oil to service for the initial startup. The mower started right up on the first pull and I put it to use right away without any problems. This mower is lightweight but sturdy and performs well in medium to tall grass. I"m very pleased with the quality and ease of starting and would buy again.
...
show more
Reviewed in the United States on January 8, 2024 by heriberto h sanchez
Size: 21-Inch 140 cc
What I liked about this Senix 21-inch Gas Push Lawn Mower with 140 cc 4-Cycle Briggs & Stratton Engine is that it came pre-assembled. All I had to do was remove it from the box, unfold the Handle, and add Oil and Gas. You do have to move the pull cord handle up onto the mower handle but this takes about 5 seconds. The Oil comes with the mower and you simply use the entire container because it is sized for the mower. After inspecting blade and adding fluids, I hit the primer 3 times (as instructed) and gave it a pull and the mower started right up. I haven't used it to cut the lawn yet but plan to in a couple days. Once I have had some time mowing, I will probably post an updated review. Note: The pic on the left is the Senix mower and the pic on the right is my old mower which I had for years but is struggling lately. Update on 9/4/2024: I cut my lawn today with the Senix 21-inch Gas Push Lawn Mower and I can say it was a complete joy. I've been cutting Lawns since the age of 8 and I have never pushed a lighter lawn mower that had this much power. My Lawn is ~1/3 Acre and it was able to cut the yard on a single tank of gas; the mower started right up, ran great, and never bogged down. I am so happy with this purchase and hope my future cuts are as enjoyable as this one!
...
show more
Reviewed in the United States on September 2, 2024 by Matt Matt
Size: 21-Inch 140 cc
At first, I was pumped about this mower. It was lightweight and did a nice job cutting. However, after a year, the orange screws that keep the handle in place got stripped and no longer work. So, it makes the mower so much harder to turn and maneuver. I had to use duct tape for temporary relief, but that doesn't work nearly as well. I wanted to get the parts (the orange screws) replaced, so I filled out a customer service request with Senix several months ago and heard nothing back. So next, I tried calling them. TWICE I called them and listened to music for 10 minutes while waiting to talk to someone and got disconnected. Their customer service is terrible. I would NOT recommend this mower.
...
show more
Reviewed in the United States on April 10, 2025 by Kirk D Webber
Size: 21-Inch 140 cc
Why did you pick this product vs others?: I was looking for a Briggs and Stratton gas mower. I don’t need anything fancy; just a reliable gas mower. They replaced the first one they sent. It was assembled wrong at the factory, the height adjustment was blocked out of the gears it is supposed to rest in. I called Amazon and being it was a manufacturing defect; the company sent a replacement. The mower is a non returnable item. Which is too bad because the one they sent is a monster to try to start. Once you get it running, it’s a good mower but I have a feeling that the primer pump isn’t installed correctly. It shouldn’t be that hard to get going.
...
show more
Reviewed in the United States on June 29, 2025 by Audrey Linda Blue
Size: 21-Inch 140 cc
I really love this little mower! It comes nearly fully assembled in the box, the side chute for grass is easy on/off, it starts up well with the three fuel pumps and just one or two pulls. Wheel height is easily adjustable, too. No complaints!
Reviewed in the United States on June 17, 2025 by Boutrosbabe