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

|15 ratings

Smart summary

Generated by AI
  • Pulls Itself Forward

    Pulls Itself Forward

    Front-wheel drive pulls the mower forward to make steering around obstacles much easier.
  • No Mixing Oil Required

    No Mixing Oil Required

    The four-cycle engine runs on regular gas without needing a messy oil mix.
  • Finish Mowing Faster

    Finish Mowing Faster

    The 21-inch steel deck cuts a wide path to finish yards with fewer passes.
  • Three Ways To Cut

    Three Ways To Cut

    Mulch, side discharge, or collect clippings easily.
  • Folds For Easy Storage

    Folds For Easy Storage

    The fold-down handle lets you store the mower compactly when you are done.

Specifications

  • Complete Mower Kit Included: Ships ready to mow with engine oil, mulch plug, side discharge chute, and 16 gal. rear bag.
  • Compact Storage Design: Fold down handle makes garage storage simple and space efficient.
  • Comfort Grip Handle: Ergonomic handle design helps reduce fatigue during extended mowing sessions.
  • Smooth Rolling Wheel Design: 11" rear wheels and 8" front wheels improve maneuverability across uneven or bumpy terrain.
  • 2-Year Limited Warranty: Provides peace of mind with reliable support and long-term durability.
Current price is $429.98
Prices may vary in club and online
How do you want your item?

Shipping

Free for Plus on eligible orders over $50
Columbus, 43215
Arrives by Thu, Nov 12
.
Order within 4 hr 26 min
Return or replace anytime.
Sam's credit card
Limited time! Get a $60 statement credit when you open an account between 10/28-12/2 and use it to make $30 in eligible Sam’s Club purchases within 30 days¹
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About this item

Product details

Keep your lawn looking neat with less effort using the SENIX LSSG-M9 21" Self-Propelled Gas Lawn Mower. Powered by a dependable 140cc Briggs & Stratton® E550 4-cycle engine, it delivers the reliable performance homeowners trust without the hassle of mixing oil and gas. The front-wheel-drive self-propelled system helps pull the mower forward, reducing fatigue while making it easy to maneuver around landscaping, trees, flower beds, and other obstacles. A durable 21-inch steel cutting deck provides a clean, even cut while helping you tackle your yard efficiently. The versatile 3-in-1 cutting system lets you choose between mulching, side discharge, or collecting clippings in the included 16-gallon rear bag for a polished finish. The 6-position dual-lever height adjustment makes it easy to select your preferred cutting height from 1.25" to 3.75" to match changing grass conditions. Large 11-inch rear wheels and 8-inch front wheels provide enhanced stability and control over uneven terrain, while the fold-down handle allows for compact, space-saving storage when mowing is complete. Backed by a 2-year limited warranty, the SENIX LSSG-M9 combines trusted Briggs & Stratton power, self-propelled convenience, and versatile cutting performance to help you achieve a great-looking lawn season after season.

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Key specifications

Specifications

  • Complete Mower Kit Included: Ships ready to mow with engine oil, mulch plug, side discharge chute, and 16 gal. rear bag.
  • Compact Storage Design: Fold down handle makes garage storage simple and space efficient.
  • Comfort Grip Handle: Ergonomic handle design helps reduce fatigue during extended mowing sessions.
  • Smooth Rolling Wheel Design: 11" rear wheels and 8" front wheels improve maneuverability across uneven or bumpy terrain.
  • 2-Year Limited Warranty: Provides peace of mind with reliable support and long-term durability.

Member ratings & reviews

3.8 out of 5 stars
stars
15 ratings15 reviews
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Showing 1-3 of 15 reviews

Jun 2, 2026
Reviewer name: Jenelle
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Great little mower. Saves a lot of wear on the body when cutting areas that riding mower can't reach. This was a good purchase and well worth the money.

Review from walmart.com
Helpful?5G21LC1JW6K720629670238
Dec 3, 2025
Reviewer name: Thomas
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Great mower!

[This review was collected as part of a promotion.] The mower is easy to start and great at bagging leaves. It has the power I need for our difficult lawn.

Review from walmart.com
Helpful?5G21LC1JW6K720629670238
Dec 2, 2025
Reviewer name: James
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

[This review was collected as part of a promotion.] this is a great little lawn mower. Briggs %26 Stratton engine means it's going to run forever everything is very solid and well put together. I love the fact that it folds down so I can put it under my workbench. you will not be disappointed with this lawn mower.

Review from walmart.com
Helpful?5G21LC1JW6K720629670238
Current price is $429.98
Prices may vary in club and online
How do you want your item?

Shipping

Free for Plus on eligible orders over $50
Columbus, 43215
Arrives by Thu, Nov 12
.
Order within 4 hr 26 min
Return or replace anytime.