SENIX 21-in Gas Self-propelled lawn mower with 150-cc Briggs and Stratton Engine

Name: SENIX 21-in Gas Self-propelled lawn mower with 150-cc Briggs and Stratton Engine
Brand: SENIX
SKU: 5014901699
Rating: 4.5 (41 reviews)

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4.5

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Beautify your lawn with the SENIX 21-inch 150 cc self propelled lawn mower. This front-wheel drive, single-speed self-propelled lawn mower features a 21-inch steel deck and is powered by a reliable Briggs & Stratton 150 cc gas powered engine that is designed to provide longer engine life, low vibration, and easy maintenance. The 4-stroke engine is eco-friendly offering low emissions, low fuel consumption, no mixing of oil and gas, and low noise. Prime N' Pull start makes it easy to start the mower every time, and the 3-in-1 convertible deck allows you to mulch, side discharge, or rear bag grass clippings with our 16 gallon grass bag. This lawn mower is ideal for small to medium size yards. The durable 8-inch front and 11-inch rear wheels provide great maneuverability through rough terrain and uneven surfaces, can be adjusted to 6 different positions from 1.25-inches to 3.75-inches using a dual-lever to meet the needs and conditions of your lawn. The fold down handle allows for compact and easy storage. All SENIX lawn mowers are backed by our 2-year limited warranty for your peace of mind.

Cutting Capacity: 21-Inch cutting width provides a large cutting area with high durability
Powerful Engine: Briggs and Stratton 150 cc 4-cycle EX625 engine with Prime n Pull start delivers reliable power to quickly tackle your job
Mowing Capability: 3-in-1 steel deck with mulching, side discharge and rear bagging
Drive Type: Front-wheel drive, single speed self-propel feature makes mowing effortless
Height Adjustment: 6-position dual-lever height adjustment from 1.25-inch to 3.75-inch
Maneuverability: Durable 8-inch front and 11-inch rear wheels provide great maneuverability through tough terrain and uneven surfaces
Added Comfort: Ergonomic handle maximizes user comfort during use
Storage: Fold down handle for easy storage
Includes: Engine oil, mulch plug, side discharge chute, 16 gal bagger

General
Adjustment Type	Dual-lever	Start Type	Pull start
Type	Self-propelled lawn mower	Power Source	Gas
Drive Type	Front wheel drive

Dimensions
Cut Height Adjustment	6-position	Rear Wheel Size	11-in
Mower Deck Width (Inches)	21	Package Weight (lbs.)	65
Weight (lbs.)	56	Minimum Cutting Height (Inches)	1.25
Cut Width (Inches)	21	Maximum Cutting Height (Inches)	3.75
Front Wheel Size	8-in

Features
Blade Stop System	Yes	Speed Control	Single
Foldable Handle	Yes	Self-Propelled	Yes
Bagger Included	Yes	Lowe's Exclusive	No
Discharge Location	Side	Engine Torque (Ft/Lbs)	6.25
Engine Brand	Briggs & Stratton	Mulching Capable	Yes (included)
Engine Displacement (Cu. Centimeters)	150	Engine Oil Included	Yes
Engine Series	625ex	Bagger Capable	Yes (included)

Warranty
Warranty	3-year limited

Certifications
CA Residents: Prop 65 Warning(s)	No	Safety Listing	SGS safety listing

Compatibility
Recommended Yard Size	1/2 to 1 acre	Recommended Terrain Type	Uneven

Miscellaneous
UNSPSC	27112000

Check out the Best Selling Gas Push Lawn Mowers on Lowes.com

Review

4.5 out of 5

41 Reviews

2 Star

86% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

Customers overwhelmingly praise this lawn mower for its lightweight design, effortless starting, and exceptional cutting performance. Most highlight the intuitive dual-lever height adjustment, versatile 3-in-1 functionality with effective mulching, and sharp blades delivering clean cuts in a single pass. Reviewers commend the quiet operation, solid build quality, and reliable engine performance. Many note it's easy to assemble and maneuver, even for users with limited strength. A small number reported minor issues like occasional plastic guard catching or rare mechanical concerns, but most consider it a durable, dependable choice.

Customer review summary generated by AI, including incentivized reviews.

41 Customer Reviews

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Great lawnmower 21'' 140cc Briggs and Stratton

Great lawnmower for the price. Cuts even and easy to claen.

Manuel AndaverdeJanuary 23, 2026

From YAT USA, Inc

California lawnmower

Would Recommend

I received my Senix lawnmower quickly, the manual instructions were in easy-to-understand sentences, and the Briggs & Stratton engine works like a dream, as I expected. The lawnmower was also much more reasonably priced than the ones available out here in California. Thank you folks & merry Christmas!

Chris PriceDecember 21, 2025

From YAT USA, Inc

https://photos-us.bazaarvoice.com/photo/2/cGhvdG86c2VuaXh0b29scw/cbbe751a-9f1a-58b5-85c3-9e7064539aad

https://photos-us.bazaarvoice.com/photo/2/cGhvdG86c2VuaXh0b29scw/a4f99c5b-1eac-5506-bd86-76dbf9f51bcc

Works Great

Would Recommend

Mowed 1/3 Acre of unmowed Florida lawn/jungle LOL mulched like a dream .

GeezerDecember 17, 2025

From YAT USA, Inc

Bad engine?

Would Not Recommend

Engine shutting down while mowing on the second use>

DeeeJuly 30, 2025

Was this Review Helpful ?

Not happy with this mower. Parts coming off!!

Would Not Recommend

I purchased last April, initially very happy. After about 11 months, the side chute flap has fallen off and the metal bar is gone, so I can't put it back on. That means things get spit out the side. And, the metal cage, on the side of the engine, has flown off and been run over. So, it is mangled and I could only find one of the screws. Can't put that back on either. On a good note, it still starts and cuts, just a bit more dangerously because of the chute flap not being on.

JmoonMay 7, 2025

From YAT USA, Inc

https://photos-us.bazaarvoice.com/photo/2/cGhvdG86c2VuaXh0b29scw/282206d7-933e-5ebe-9229-08091b3ee08e

https://photos-us.bazaarvoice.com/photo/2/cGhvdG86c2VuaXh0b29scw/1985c1f2-5bbb-5e04-954f-0c9748a1b614

https://photos-us.bazaarvoice.com/photo/2/cGhvdG86c2VuaXh0b29scw/7e75556a-ccff-5782-b405-fda1920475fa

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		Name	Current Item SENIX21-in Gas Self-propelled lawn mower with 150-cc Briggs and Stratton Engine
		Ratings	41
		Type	Self-propelled lawn mower
		Engine Brand	Briggs & Stratton
		Mulching Capable	Yes (included)
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Yes (included)	Yes (included)	Yes (included)	Yes (included)	Yes (included)	Yes (included)	Yes (included)	Yes (included)	Yes (included)