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Deal.ai › Compare

SENIX LSPG-M14 21-Inch Gas Mower vs PowerSmart 21-Inch Gas Push Mower

The PowerSmart is the better all-rounder for most shoppers: it bags, mulches and side discharges, and its Briggs & Stratton engine is a known quantity with wide parts and service support. The SENIX is lighter and has a thicker 14-gauge steel deck, but it cannot bag, so clippings go back on the lawn or out the side. Owners of both report typical small-engine push mower reliability; the PowerSmart's higher rating from a modest sample of owners is encouraging but not decisive.

  • Choose the SENIX LSPG-M14 if you always mulch or side discharge, want the lightest push mower to haul around, and value a heavy steel deck over a bag.
  • Choose the PowerSmart if you want bagging as an option, prefer a Briggs & Stratton engine for parts and service, and don't mind a heavier mower.

Prices

  • SENIX LSPG-M14 21-Inch Gas Mower: $225.97 at Amazon (checked today)
  • PowerSmart 21-Inch Gas Push Mower: $271.90 at Walmart (checked today)
  • Difference: the SENIX LSPG-M14 21-Inch Gas Mower is $45.93 cheaper than the PowerSmart 21-Inch Gas Push Mower today
SENIX
SENIX LSPG-M14 21-Inch 144cc

SENIX LSPG-M14 21-Inch Gas Mower

SENIX LSPG-M14 21-Inch 144cc

$225.97at AmazonChecked 12 h ago
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Pros
  • Light at 46 lb, easy to push and load
  • Thick 14-gauge steel deck resists dents
  • Cuts as low as 1.25 in for short turf
  • Mulch and side discharge cover most mowing
Cons
  • No bagging, so leaves and heavy clippings can't be collected
  • Pull-cord start only
  • Smaller brand network for service and parts
PowerSmart
PowerSmart 21-Inch 140cc 4-Cycle B&S Engine Gas Push Walk-Behind Mower

PowerSmart 21-Inch Gas Push Mower

PowerSmart 21-Inch 140cc 4-Cycle B&S Engine Gas Push Walk-Behind Mower

4.4(67 ratings)
$271.90at WalmartChecked 17 h ago
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Store links may earn us a commission. Price via Klarna.

Pros
  • Briggs & Stratton engine with broad parts and service coverage
  • Bags, mulches and side discharges
  • 18-gallon bag holds a good amount before emptying
  • 10-inch rear wheels roll over rough ground
Cons
  • Heavier at about 64 lb
  • Costs more to step up to than the SENIX
  • Bagging adds emptying stops on large lawns

What separates them

SENIX LSPG-M14 21-Inch Gas MowerPowerSmart 21-Inch Gas Push Mower
Cutting modesMulch and side discharge only; no bagBag, mulch and side discharge (2-in-1 bag and mulch per listing, side discharge per description)
EngineSENIX 144cc 4-cycle, 3.4 HP, pull startBriggs & Stratton 550ex/EX550 140cc OHV, 4-stroke
Deck14-gauge heavy-duty steel, 22 in deckSteel deck, depth not stated
Weight46 lb64 lb (63 lb per description)
Cutting height6 positions, 1.25 to 3.75 in6 positions, 1.5 to 3.9 in
Grass collectionNone18-gallon rear bag
Rear wheelsNot stated10-inch
Owner ratingNot stated4.4 out of 5 from 67 ratings

Price history

$271.90$225.97
Nov 5Nov 10
  • SENIX LSPG-M14 21-Inch Gas Mower: lowest $225.97 on Nov 10 at Amazon.
  • PowerSmart 21-Inch Gas Push Mower: lowest $271.90 on Nov 8 at Walmart; $271.90 on Nov 10.

Prices at every store

SENIX LSPG-M14 21-Inch Gas Mower

  • WalmartNew

    In stockSold by SENIX ToolsReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.

    $237.00Free shippingChecked Nov 8
    Visit Walmart
  • Sam's ClubNew

    In stock

    $252.98+ $64.00 shippingChecked 12 h ago
    Visit Sam's Club
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $225.97Free shippingChecked 12 h ago
    Visit Amazon
  • Sam's ClubNew

    Availability unknown

    $252.98Checked Nov 5
    Visit Sam's Club

Also available at

  • eBayCheck price at eBay

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All 8 stores and price history →

PowerSmart 21-Inch Gas Push Mower

  • WalmartNew

    In stock

    $271.90Free shippingChecked 17 h ago
    Visit Walmart
  • Lowe'sNew

    In stock

    $389.99Free shippingChecked 17 h ago
    Visit Lowe's
  • Best BuyNew

    In stock

    $399.99Free shippingChecked 17 h ago
    Visit Best Buy

Store links may earn us a commission. Some prices via Klarna.

All 3 stores and price history →

Specs compared

SpecSENIX LSPG-M14 21-Inch Gas MowerPowerSmart 21-Inch Gas Push Mower
Cutting Width21 in21-inch
Engine Displacement144 cc140cc
Engine Type4-Cycle4-Stroke, Single-Cylinder, Overhead Valve (OHV)
Deck MaterialHeavy-duty steel, 14-gauge steelsteel
Weight46 lbs64 lb
Mower TypeWalk Behind, Lawn Mower—
Drive TypePush—
Self PropelledNo—
Power SourceGas—
Start TypePull Cord Start—
BaggingNo—
Cutting Height Options6-Position—
Show all 30 specsShow fewer specs
SpecSENIX LSPG-M14 21-Inch Gas MowerPowerSmart 21-Inch Gas Push Mower
Maximum Cutting Height3.75 in—
Minimum Cutting Height1.25 in—
MulchingYes—
Side DischargeYes—
Engine Horsepower3.4 HP—
Blade SystemSide Discharge, Mulching—
Deck Size22 in—
Overall Dimensions32.40" X 22.70" X 14.90" (l x w x h)—
Coverage AreaMedium to large lawns—
Typical Users

What reviewers say

PowerSmart 21-Inch Gas Push Mower

  • 4.4 / 567 ratings

Rated 4.4 out of 5 from 67 ratings, owners generally find it a good value for a small yard. The Briggs & Stratton engine and mulching performance draw the most praise. Complaints center on push effort and the engine struggling in heavy growth.

What people mention
  • EnginePraisedOwners report the Briggs & Stratton 550ex starts easily and runs reliably with basic maintenance.
  • MulchingPraisedThe deep dome deck and sharp blade chop clippings well, leaving a clean lawn.
  • Push effortCriticisedWithout self-propel, pushing uphill or through thick grass is tiring.
  • Cut qualityPraisedReviewers say the 21-inch deck gives an even cut at the six height settings.

Questions and answers

Which is better for mulching?
Both mulch. The PowerSmart's deep dome deck is marketed for mulching performance, but the SENIX's 14-gauge deck and 3.4 HP engine handle thick grass well too. For most lawns either works; pick the PowerSmart if you also want to bag.
Can the SENIX bag clippings?
No. The SENIX LSPG-M14 has no bagging option. It mulches or side discharges only. If you need to collect clippings or leaves, the PowerSmart is the one to get.
Which is easier to push?
The SENIX. At 46 lb it is roughly 18 lb lighter than the PowerSmart, and both are push, not self-propelled. On slopes or long runs, the weight difference is noticeable.
Which engine is easier to service?
The PowerSmart's Briggs & Stratton 550ex is a common engine, so parts, filters and service are easy to find. The SENIX 144cc engine is less widespread, so check local dealer support before buying.
Is the PowerSmart worth stepping up to?
Yes if you want bagging, a name-brand engine and larger rear wheels. The SENIX makes more sense if you only mulch or side discharge and want the lighter mower with the thicker deck.
Which lasts longer?
Both use steel decks and 4-cycle engines, so lifespan depends on oil changes, blade sharpening and storage. The SENIX's 14-gauge deck resists dents better; the PowerSmart's Briggs engine has the edge on parts availability.

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Buying guides that pick them

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Residential
—
Included AccessoriesEngine Oil—
Engine make—Briggs & Stratton
Cutting positions—6
Bag capacity—18-gallon
Rear wheel size—10-inch
Cutting modes—2-in-1 bag and mulching
Engine series—550ex / EX550
Oil capacity—16.9 fl. oz.