SENIX

SENIX 21" 140cc 4-Cycle Briggs & Stratton Engine Gas Push Lawn Mower with 3-in-1 Mulching, Bagging, Side Discharge

|35 ratings
Item # 990484081
Current price is $319.97
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Columbus, 43215
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Smart summary

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  • Robust Engine: Features a 140cc Briggs & Stratton 4-stroke gas engine (E550 model) for clean, consistent performance, complete with a Prime 'n Pull start for effortless ignition.
  • Adaptive Cutting: Equipped with a durable, rust-resistant 21-inch steel cutting deck, ideal for small to medium-sized lawns, and a 3-in-1 system for mulching, rear bagging, or side discharge.
  • Precise Height: Offers a 6-position dual-lever height adjustment, allowing custom cutting heights from 1.25 inches to 3.75 inches to suit various lawn conditions.
  • Effortless Maneuverability: Designed with oversized 11-inch rear wheels that effectively tackle bumps and uneven ground, ensuring smooth navigation across your yard.
  • Compact Storage: Features a fold-down handle, enabling quick and compact storage of the mower, saving space when not in use.
  • Spacious Collection: Includes a large 16-gallon rear collection bag, holding 50% more clippings than standard bags to minimize emptying frequency.
senix 21" 140cc 4-cycle briggs & stratton engine gas push lawn mower with 3-in-1 mulching, bagging, side discharge — 3/4 front-right view showing the black Briggs & Stratton engine on a 21-inch steel cutting deck, black 16-gallon rear collection bag with Senix logo, oversized rear wheels, side discharge chute, fold-down handle with orange quick-release clips, and dual-lever height adjusters; also suitable for small yards or urban lots.
SENIX 21" 140cc 4-Cycle Briggs & Stratton Engine Gas Push Lawn Mower with 3-in-1 Mulching, Bagging, Side Discharge
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About this item

Product details

Simple. Tough. Gets the job done. Take control of your yard with the SENIX 21-inch Push Lawn Mower, powered by a 140cc Briggs & Stratton 4-stroke engine that delivers clean, consistent performance without the gas-oil headache. This walk-behind gas mower is built for efficiency — featuring a rugged 21-inch steel deck and 3-in-1 cutting system that lets you mulch, rear bag, or side discharge on your terms. Prime N’ Pull™ start gets you going with minimal effort, and the 6-position dual-lever height adjustment (1.25" to 3.75") means you can dial in the perfect cut for any season. Oversized 11-inch rear wheels tackle bumps and uneven ground without a fight, and the fold-down handle makes storage quick and compact when you're done. This mower doesn’t overpromise — it overdelivers. The LSPG-M7 is a dependable backyard companion that keeps your lawn in shape and your weekend headache-free.
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Specifications

  • Ergonomic Handle Design — 20% lower vibration and comfort grip reduce arm fatigue for a more comfortable mowing experience.
  • Fold-Down Handle for Compact Storage — Easy to store in tight spaces, saving valuable garage or shed room.
  • 2-Year Limited Warranty — Provides peace of mind with reliable support and long-term durability.

Member ratings & reviews

3.9 out of 5 stars
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35 ratings35 reviews
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  1. 5 stars57% (20)
  2. 4 stars14% (5)
  3. 3 stars9% (3)
  4. 2 stars0% (0)
  5. 1 star20% (7)
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Showing 1-3 of 35 reviews

Nov 6, 2025
Reviewer name: Victoria
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

i am over 60 with many health issues,one being copd, and this mower allows me to mow my uneven, slightly inclined area with ease. the bonus is i dont get short of breath. the downside is that the bag only allows me to make one pass b4 i have to dump it, and it isn't very easy to remove and reattach quickly. overall, i love it.

Review from walmart.com
Helpful?6M6X07THNVRB18850422510
Jul 24, 2025
Reviewer name: Merrell
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

EXCELLENT MOTOR, EXCELLENT WELL, comes with oil

The engine is a Briggs and Stratton 500 series 140cc power, 4 stroke motor. The oil comes with it but, to the bottom fill line, not the top. The instructions are, do not use economy gas. I always use premium and my lawnmowers last 6-8 years with NO repairs. Change the oil yearly, without fail, and in this case, use 4-stroke oil, which is a little thicker. Came out of the box intuitively and took me 5 minutes to get it up and running, including gas and oil. Intelligently boxed to save me stupid extra steps, which I hate. The blade is unlocked and ready to cut. It is a sharp blade but, these need sharpening or replacing every two years. It´s cheap, quick and will save your back from a dull blade having to go over and over a section.

Review from walmart.com
Helpful?6M6X07THNVRB18850422510
Sep 14, 2023
Reviewer name: Darren
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Solid push mower at a great price!

I trusted the other positive reviews on this site for this mower, and I have not been disappointed! This mower has all of the features I was looking for in a push mower, and then some. It starts up on the first pull (after pushing the priming button) every time. The side chute is great for scattering the clippings, if you don't like to bag, and the rear bag is great, if you don't like clippings in your yard. With proper care, I think this mower will last a long time. Highly recommended!

Review from walmart.com
Helpful?6M6X07THNVRB18850422510

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