Model # 12A-A1BA729

Internet #204686154

Store SKU #339796

Store SO SKU #639830

Yard Machines 21 in. 140 cc OHV Briggs and Stratton Walk Behind Gas Self Propelled Mower
0043033566433

Yard Machines

21 in. 140 cc OHV Briggs and Stratton Walk Behind Gas Self Propelled Mower

  • 140 cc Briggs & Stratton 500e Series Engine
  • Front Wheel Drive Self-Propelled
  • Dual lever height adjustments
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Frequently Bought Together

Frequently Bought Together

Product Overview

Mower Features
Gas-Powered
Terrain - Flat
2 Year Warranty
21in Cutting Width
1 Blade
cutting options: bag, mulch
  • 140 cc Briggs & Stratton 500e Series Engine
  • Front Wheel Drive Self-Propelled
  • Dual lever height adjustments
The powerful Briggs and Stratton engine delivers solid, efficient power to tackle the yard. This 21 in. Self-Propelled Mower offers 6 cutting positions to cut grass down to size; the single forward speed unit offers easy maneuverability. This unit also offers mulching which aides in healthy turf development for your lawn and rear bagging option for easy-clean-up.
  • 140 cc Briggs and Stratton 550e OHV engine with primer
  • 0.8 Qt. gas capacity
  • SAE 30 arnold brand oil
  • 18 oz. oil included
  • 21 in. steel deck
  • Dual lever, 6-position cutting height
  • Height range 1.25 in. to 3.75 in.
  • Rear bagger included
  • Integrated mulch plug
  • Loop steel handle with indent
  • 1 forward speed bail control
  • 8 in. front wheels
  • 8 in. rear wheels
  • 2-years limited warranty
  • Use fuel stabilizers to maintain your engine and increase the longevity of your mower
  • California residents see Prop 65 WARNINGS

Product Overview

  • 140 cc Briggs & Stratton 500e Series Engine
  • Front Wheel Drive Self-Propelled
  • Dual lever height adjustments
Model #: 12A-A1BA729
Sku #: 339796
Internet #: 204686154

The powerful Briggs and Stratton engine delivers solid, efficient power to tackle the yard. This 21 in. Self-Propelled Mower offers 6 cutting positions to cut grass down to size; the single forward speed unit offers easy maneuverability. This unit also offers mulching which aides in healthy turf development for your lawn and rear bagging option for easy-clean-up.

  • 140 cc Briggs and Stratton 550e OHV engine with primer
  • 0.8 Qt. gas capacity
  • SAE 30 arnold brand oil
  • 18 oz. oil included
  • 21 in. steel deck
  • Dual lever, 6-position cutting height
  • Height range 1.25 in. to 3.75 in.
  • Rear bagger included
  • Integrated mulch plug
  • Loop steel handle with indent
  • 1 forward speed bail control
  • 8 in. front wheels
  • 8 in. rear wheels
  • 2-years limited warranty
  • Use fuel stabilizers to maintain your engine and increase the longevity of your mower
  • California residents see Prop 65 WARNINGS

Info & Guides

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Price
$249.00 /each
$279.00 /each
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$329.00 /each
Name 21 in. 140 cc OHV Briggs and Stratton Walk Behind Gas Self Propelled Mower 21 in. 159cc Front-Wheel Drive 3-in-1 Gas Self Propelled Walk Behind Lawn Mower 22 in. Kohler Low Wheel Variable Speed Gas Walk Behind Self Propelled Lawn Mower 22 in. Kohler High Wheel Variable Speed Gas Walk Behind Self Propelled Lawn Mower
Brand Yard Machines Cub Cadet Toro Toro
Ratings (650) (164) (1607) (4057)
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Specifications

Dimensions

Assembled Depth (in.)
70 in
Assembled Height (in.)
36 in
Assembled Width (in.)
22 in
Blade Length (in.)
21
Cutting Width
21 inches
Front Wheel Size (in.)
8
Mower Deck Width
21
Rear Wheel Size (in.)
8

Details

Assembly Required
Yes
CA (CARB) Compliant
CARB Compliant
Cutting Height Options
6-position
Cutting Options
Bag,Mulch
Deck Material
15 Gauge Steel
Deck Type
Stamped
Drive Type
Front-wheel Drive
Engine Displacement (cc)
140
Engine Make
Briggs and Stratton
Engine Torque (ft.-lb.)
0
Features
Bagger,Blade Brake,Foldable handle,Mulching Lawn Mower,Rust resistant deck,Tool-free adjustments
Fuel Tank Capacity (gallons)
0.2
Included
Engine oil
Lawn Mower Type
Self-Propelled Lawn Mower
Maximum Cutting Height (in.)
3.75
Minimum Cutting Height (in.)
1.25
Mower Size Type
Standard
Number of Blades
1
Number of Handlebar Positions
0
Oil Capacity (oz.)
15
Power Type
Gas
Product Weight (lb.)
72lb
Rear Wheel Height
Low Wheel
Recommended Oil Type
SAE 10W-30
Recommended Terrain
Flat,Sloped,Uneven
Refurbished
No
Returnable
90-Day
Size of Yard
1/4 - 1/2 Acre
Start Type
Pull Cord
Walk Behind Mower Type
Self Propelled

Warranty / Certifications

Manufacturer Warranty
2 year limited warranty

Specifications

Dimensions

Assembled Depth (in.)
70 in
Assembled Height (in.)
36 in
Assembled Width (in.)
22 in
Blade Length (in.)
21
Cutting Width
21 inches
Front Wheel Size (in.)
8
Mower Deck Width
21
Rear Wheel Size (in.)
8

Details

Assembly Required
Yes
CA (CARB) Compliant
CARB Compliant
Cutting Height Options
6-position
Cutting Options
Bag,Mulch
Deck Material
15 Gauge Steel
Deck Type
Stamped
Drive Type
Front-wheel Drive
Engine Displacement (cc)
140
Engine Make
Briggs and Stratton
Engine Torque (ft.-lb.)
0
Features
Bagger,Blade Brake,Foldable handle,Mulching Lawn Mower,Rust resistant deck,Tool-free adjustments
Fuel Tank Capacity (gallons)
0.2
Included
Engine oil
Lawn Mower Type
Self-Propelled Lawn Mower
Maximum Cutting Height (in.)
3.75
Minimum Cutting Height (in.)
1.25
Mower Size Type
Standard
Number of Blades
1
Number of Handlebar Positions
0
Oil Capacity (oz.)
15
Power Type
Gas
Product Weight (lb.)
72lb
Rear Wheel Height
Low Wheel
Recommended Oil Type
SAE 10W-30
Recommended Terrain
Flat,Sloped,Uneven
Refurbished
No
Returnable
90-Day
Size of Yard
1/4 - 1/2 Acre
Start Type
Pull Cord
Walk Behind Mower Type
Self Propelled

Warranty / Certifications

Manufacturer Warranty
2 year limited warranty

Questions & Answers

I bought this product Sept.2017. I have used it twice. Would use it more but I can't get it to ...

I bought this product Sept.2017. I have used it twice. Would use it more but I can't get it to start. Do you have a repair shop that you use.
Asked by: joy
We had a very dry summer so I rarely used mine. It could be that your gas has gone bad. I'd dump the gas tank out, go buy some fresh gas after you also empty the gas can. I always use marine grade sta-bil and then never have a problem with the gas going bad.
Answered by: Patrick
Date published: 2018-04-27

Does this thing have an idle to where you don't have to hold down the handle and the motor idles?...

Does this thing have an idle to where you don't have to hold down the handle and the motor idles? Or do you have to hold down the handle to keep it running?
Asked by: Krysten
I use bungee cord when I am at camp with no little ones around.
Answered by: Pete
Date published: 2018-06-16

what kind of gas does it use?

what kind of gas does it use?
Asked by: snookie
I used it twice and it worked well. Trying to start it for the 3rd mow. It would start but quickly stop. B&S Customer Service chat said it's due to federal law mandating that the fuel nozzles are now much smaller in an attempt to reduce air pollution and more likely to clog. They told me to use a fuel conditioner and carb cleaner. Ah the feds!
Answered by: David
Date published: 2018-05-24

Is it easy to start up?

Asked by: Becky
Yes it is. Their is a primer on the left side you push the button 3 or 4 times. Then hold the blade lever down and pull. Real easy pul start
Answered by: Andy
Date published: 2017-10-02
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Customer Reviews

21 in. 140 cc OHV Briggs and Stratton Walk Behind Gas Self Propelled Mower is rated 4.0 out of 5 by 650.
Rated 5 out of 5 by from This lawnmoore was easy to assemble it’s starting... This lawnmoore was easy to assemble it’s starting on the first pull the noise level is not too loud The bag picked up all the cutting nothing was left behind I recommend it
Date published: 2018-10-24
Rated 5 out of 5 by from I have only used it once. So far it’s great.... I have only used it once. So far it’s great.
Date published: 2018-10-23
Rated 4 out of 5 by from More efficient than the push mower even with the same... More efficient than the push mower even with the same brand
Date published: 2018-10-23
Rated 1 out of 5 by from The mower did not work straight out of the box.... The mower did not work straight out of the box. Contacted Brigg and Stratton with no results
Date published: 2018-10-22
Rated 1 out of 5 by from Could not get mower to start. Customer service at... Could not get mower to start. Customer service at MTD a joke.
Date published: 2018-10-16
Rated 5 out of 5 by from The mower was easy to set up and started on... The mower was easy to set up and started on the first pull!
Date published: 2018-10-16
Rated 4 out of 5 by from Good mower. I had no problems with it.... Good mower. I had no problems with it.
Date published: 2018-10-10
Rated 5 out of 5 by from I was pleasantly surprised with this product. Easy to set up. Instructions are excellent. Easy... I was pleasantly surprised with this product. Easy to set up. Instructions are excellent. Easy to start. I'm 75 years old and can easily manage mowing my lawn. No pushing. It moves right along and I can keep up with a moderate walk.
Date published: 2018-10-09
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