SENIX Gas Lawn Mower, 20" 144 cc Push Mower,cortadora de pasto | Light-weight Design Push Mower,Ergonomically Designed Handle, 4-Cycle Engine, 3 Levels Height Adjustment for 1/4 Acre Yard
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Arrives
Friday, Jul 31
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Set name: 20"-144 cc
Features
- Easy Start & Simple Assembly 4-Cycle engine that delivers impressive performance. Real customers confirm it starts on the first pull almost every time easy enough for seniors and kids to handle. Oil and tools are included, so nothing extra to buy. Assembly is quick and straightforward (a few users said it takes a little patience, but most had no issues). Backed by a 2-year warranty for total peace of mind
- Lightweight & Nimble for Tight SpacesSlim body and lightweight design make it a perfect fit for small yards, dog runs, and narrow areas. No self-propel needed just push and go. Easily maneuvers around flower beds, fences, and other obstacles without effort. The 7" front and rear wheels improve traction on rough terrain, from short grass to steep slopes
- Powerful & Versatile PerformanceThe 144CC engine tackles overgrown grass and weeds with ease. Handles both flat lawns and slopes in one pass. Cuts through wet grass without clogging and does a great job shredding leaves. The 20" cutting width covers more ground per pass than a 16" mower significantly improving efficiency and saving you time
- Handles Hills & Rugged Terrain with EaseThe 7" wheel design delivers reliable traction on everything from short grass to bumpy slopes no slipping or struggling. Works great on hills with minimal effort. For extremely tall grass, simply raise the cutting height or take two passes. The 3-position height adjustment (1.35" / 2.3" / 3.15") lets you adapt to any grass condition in seconds
- Fuel-Efficient & Great Value No charging required just add gas and go. Excellent fuel efficiency and reasonable noise levels won't bother the neighbors. Lightweight and easy to push is where this mower really shines. Oil and tools come right in the box open it up and start mowing. Backed by a 2-year warranty. For small yards and everyday maintenance, this is a high-value choice that delivers flexibility, lightweight handling, and solid cutting performance
Description
Backed by 20+ years of manufacturing and innovation in the tool industry, at SENIX, we aim to break barriers and shatter expectations by redefining and manufacturing outdoor power equipment and power tools with edgy innovation and relentless passion. Whether you're an arborist, a landscaper, or a fearless DIY enthusiast, SENIX tools have been crafted with you in mind. We empower you to conquer any task at hand. Visit the Store Visit the Store Visit the Store Visit the Store 140cc 20" Gas Lawn Mower 170cc 22" Gas Lawn Mower 170cc 21" Gas Lawn Mower 201cc 22" Gas Lawn Mower 163 cc 22" Lawn Mower 140cc 21" Gas Lawn Mower
Brand: SENIX
Power Source: Gas Powered
Material: Stainless Steel
Color: Blue
Style: 20"-144 cc
Item Weight: 39.3 Pounds
Cutting Width: 20
Operation Mode: Manual
Product Dimensions: 25.6"D x 21.8"W x 13"H
Assembly Required: Yes
Brand Name: SENIX
Model Number: LSPG-L4
Required Assembly: Yes
UPC: 843212102731
Manufacturer: SENIX TOOLS
Manufacturer Part Number: GCJ-LSPG-L4
Item Type Name: 20 inch 2-in-1 Push Mover with Mulching and Side Discharge, 4-Cycle Engine, 3 Position Cutting Height Adjustment for Lawn, Yard and Garden (LSPG-L4)
Material Type: Stainless Steel
Item Weight: 39.3 Pounds
Cutting width: 20
Item Dimensions D x W x H: 25.6"D x 21.8"W x 13"H
Wheel Size: 7 Inches
Power Source: Gas Powered
Operation Mode: Manual
Smart Home Compatibility: Not Smart Home Compatible
Color: Blue
Style Name: 20"-144 cc
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Friday, Jul 31
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.
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Top Amazon Reviews
Style: 20"-144 cc
Mower arrived quickly, packaging was very good. All pieces present, and came with a bottle of oil so there was no need to go to the automotive store. It was easy to assemble, and I like that it is very simple and straight forward. It has started up and run steadily from the first pull each time, and this mower cut the yard with very little effort. Noise is about what you’d expect for a push mower. Height is not adjustable without removing and reinstalling the wheels for the model I got, but I have no need to adjust it now that it’s all together. It navigates around obstacles easily for the lightweight version. This was a solid and economical purchase that will last a good long time as long as non-ethanol gas is used! Recommend for those looking for simple and budget-friendly!
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Reviewed in the United States on April 7, 2026 by Amber L
Style: 3-piece set
After reading a ton of reviews, I realized a lot of them probably depend on which model you purchase. I ended up getting the SENIX 22" Self-Propelled Gas Lawn Mower (170cc), and my experience has been very positive so far. Assembly was extremely easy, it took me maybe 10 minutes to get it ready to use. Honestly, it took longer to get it out of the box than it did to assemble. As for performance, I mowed first thing in the morning after it had rained the night before. Some areas of my yard were around 6–8 inches tall, and the mower handled them surprisingly well. As long as I slowed down a bit in the thicker sections, it cut through everything without any issues. For the price, I think it’s absolutely worth the money, and I would definitely recommend it.
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Reviewed in the United States on May 30, 2026 by Larry Scheib II
Style: 20"-144 cc
I regret buying this lawn mower. It arrived three days ago and I still have not figured out how to use it. First, do not buy this lawn mower if you have never owned a lawn mower before. Second, do not buy this lawn mower if you have never put a lawn mower together before. In no part of the listing nor in any part of the instructions does it tell you what tools you need. Before buying this I did not own the needed tools. You will need a 10mm socket wrench and a 13mm socket wrench and a crescent wrench to assemble this. a second 13mm socket wrench with a second handle will help as well as a 12mm socket wrench with that same second handle. I did it with just the 13mm and the 10mm and the crescent wrench. Make sure your crescent wrench can open up to 13mm. I attempted to borrow a set of American sockets from a friend but they didn't fit so I had to spend $25 to buy a set of metric socket wrenches on Amazon as Walmart had none and Home Depot and Lowes had only expensive sets (both over $50). So that took me two days of going back and forth trying to figure out what tools I needed. It would have been so helpful if they only had listed those items with the advertisement so that you are prepared. I had no idea what size sockets I would need so I ordered a 3mm to 13mm set and found out by trial and error. I could have just purchased the two size sockets individually had I known ahead of time the size I needed and done that for $10 but their lack of consideration cost me the extra $15. I recommend doing this on a patio table or some such as that will make it easier to install the wheels. But you can do it on a garage floor or driveway. Unfortunately the instructions are in very tiny writing. I am a senior citizen and I had to combine 2.75 dptr reading glasses with a 3X magnifying glass to read everything. the diagrams are also quite tiny so it is difficult to see. There is no clear picture of what screws you have to use on what part. I learned by trial and error. Total assembly time once I had the tools was two hours. I have never put together anything mechanical. If you have experience putting lawn mowers together and have a more extensive set of tools you will probably do this in less time. Now for the reason why I have not yet used this lawn mower. The instructs are incomplete and and are ONLY designed for people with experience using and maintaining lawn mowers. If that is not you then you probably should not get this lawn mower. In absolutely no place in the instruction manual, box, on the listing, in the one video that accompanied the listing or anywhere on YouTube could I figure out where the gas or the oil goes. Now this might seem obvious to anyone with experience using lawn mowers. But despite being 65 years old, I have never until now attempted to use a lawn mower that had a motor in it. My old one was completely manual and it just couldn't do the job. None of my immediate neighbors speaks English and my friend who loaned me the American wrench set does not have a lawn and knows nothing about lawn mowers. It would be nice if at least it was labeled on the lawn mower itself but it is not. So I am taking a risk. If I put the oil and the gas both in the wrong place I think I will probably ruin the engine or perhaps start a fire. Now if you have lots of lawn mower experience this might be a good deal for you. But I could not tell you since I have not yet figured out to how to get it going as there is no oil and gas in it yet. I absolutely cannot recommend this lawn mower for the above reasons.
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Reviewed in the United States on June 27, 2025 by David J.
Style: 20"-144 cc
Easy to put together takes about 35 minutes instructions are not very big but is easy enough to follow cuts great bought this mower to do my ditches because my zero turn is way to big and is unsafe on the slops so i wanted something small but not a weed eater this mower ended up being perfect price wise and size pushes easy and single pull start well made and a 2 year warranty
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Reviewed in the United States on May 31, 2026 by Amazon Customer
Style: 20"-144 cc
Fantastic. Assembly intuitive and good thing because i found assembly intructions after assembling. Time will tell but runs great. Took on very tall wet grass. Several stalls from being choked by too long and too wet but instant easy pull restarts. Kept old mower for back up wheels in case reviews hold true about them. Very happy at price.
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Reviewed in the United States on May 12, 2026 by Michael Bowers
Style: 20"-144 cc
Pretty durable mower. Hard to adjust but works well and fires right up. The material make up could be better but it’s easy to assemble and is self propelled
Reviewed in the United States on June 30, 2026 by Ashley Allison
Style: 20"-144 cc
Very very durable, mowed my overgrown 3 foot tall grass with it, even if it’d get clogged up with grass and turn off every 2 minutes while I did it I bet any push mower would do that, it always started right back up after unclogging. Twigs, small tree branches, tall tough weeds hate to see it coming!
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Reviewed in the United States on July 4, 2026 by EnlightenedShaggy420
Style: 20"-144 cc
I'm gonna give this in the middle as far as a rating. YOU HAVE TO ASSEMBLE for anyone thinking this comes assembled ready to go. YOU ALSO HAVE TO PUT OIL IN IT, for anyone not knowing this. I'm early in the process but its cutting grass. Pros - 1. For the Money, you get more than you pay for. I could not find any other mower at this price point. Lowes and Home Depot cheapest IN-STORE were $50-$100 more with less powerfull engine. 2. Assembly is for the most part easy but you will probably want a 2nd set of hands available to help. To make things faster you may want to use your own tools. Instructions tell you what to do but arent absolutely the greatest. 3. Mower is very lightweight and not hard to push or manuever whatsoever. 4. I had no missing parts in my order and received everything in the box packaged well. 5. They provide a bottle of oil to use which is a plus. 6. Depends on your preference but a different color scheme then most push mowers. Cons 1. Tools they give you for assembly will make it take longer to assemble. 2. Manual could definately be better for installation. 3. THIS IS MY BIGGEST CON. My unit would not start after initial setup. Installed the oil and filled the gas tank. Primed it up and nothing. After maybe 30 minutes i found that the starter cord was not pulling the starter lever enough on the back of the engine. After pulling the cord back toward me more and installing some zip ties it did the trick and started right up. That is a manufacturer defect and should not have been passed through quality control. Overall thoughts - You wont find another mower at this price point new. It does not have a bagger but it never stated it did in the first place. Installation really isnt bad but Manual could be better. So far it runs and cuts great. My personal issue with my unit not starting at first definately takes some stars off as i had to create my own fix. If your mower isnt starting check your starter cable and make sure your prime it.
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Reviewed in the United States on April 17, 2026 by Keaton