Model # 12A-A1BA729

Internet #204686154

Store SKU #339796

Store SO SKU #639830

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

Yard Machines

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

  • 140 cc Briggs & Stratton 500e Series Engine
  • Front Wheel Drive Self-Propelled
  • Dual lever height adjustments
$26900 /each
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Frequently Bought Together

Installation Options

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 & 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.
  • 140cc Briggs & 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

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 & 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.

California residents: see   Proposition 65 information

  • 140cc Briggs & 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

Info & Guides

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Price
$269.00 /each
$299.00 /each
$309.00 /each
$319.00 /each
Name 21 in. 140cc OHV Briggs & Stratton Walk Behind Gas Self Propelled Mower 21 in. Variable Speed All-Wheel Drive Gas Self Propelled Mower 22 in. Kohler Low Wheel Variable Speed Gas Self Propelled Mower 22 in. Kohler High Wheel Variable Speed Gas Self Propelled Mower
Brand Yard Machines Lawn-Boy Toro Toro
Ratings (428) (334) (1303) (3420)
Power Type Gas Gas Gas Gas
Drive Type Front-wheel Drive 4 Wheel Drive Front-wheel Drive Front-wheel Drive
Features Bagger,Blade Brake,Foldable handle,Mulching Lawn Mower,Rust resistant deck,Tool-free adjustments Adjustable Handlebar,Bagger,Mulching Lawn Mower,Tool-free adjustments Bagger,Deck cleanout,Foldable handle,Mulching Lawn Mower,Tool-free adjustments Bagger,Deck cleanout,Foldable handle,High wheel,Mulching Lawn Mower,Tool-free adjustments
Refurbished No No No No
Size of Yard 1/4 - 1/2 Acre 1/4 - 1/2 Acre 1/4 - 1/2 Acre 1/4 - 1/2 Acre
Start Type Pull Pull Pull Pull
View Product View Product View Product View Product

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 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
Number of Blades
1
Number of adjustable handlebar positions
0
Oil Capacity (oz.)
15
Power Type
Gas
Product Weight (lb.)
72lb
Recommended Oil Type
SAE 10W-30
Refurbished
No
Returnable
90-Day
Size of Yard
1/4 - 1/2 Acre
Start Type
Pull
Terrain Type
Flat
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 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
Number of Blades
1
Number of adjustable handlebar positions
0
Oil Capacity (oz.)
15
Power Type
Gas
Product Weight (lb.)
72lb
Recommended Oil Type
SAE 10W-30
Refurbished
No
Returnable
90-Day
Size of Yard
1/4 - 1/2 Acre
Start Type
Pull
Terrain Type
Flat
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: 2017-11-08

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

what kind of gas does it use?

what kind of gas does it use?
Asked by: Kaitlyn
Unleaded regular,no more than 10% ethanol
Answered by: Kenny
Date published: 2017-11-07

is the set up of the 12A-A1BA729 fairly easy

Asked by: RJL173
Not if you are not handy, it took me a long time and it didn't say anywhere that in order to pull the engine chord you need to push on the "run" handle
Answered by: Had2return
Date published: 2017-08-19
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Customer Reviews

21 in. 140cc OHV Briggs & Stratton Walk Behind Gas Self Propelled Mower is rated 4.0 out of 5 by 428.
Rated 5 out of 5 by from I had this same mower before for 7 years and it was great. They made a few slight improvements an... I had this same mower before for 7 years and it was great. They made a few slight improvements and it is even better (cage around muffler so you don't burn yourself). Gas cap doesn't fall off easy anymore. Gas filler top is longer, and doesn't overflow when filling the tank).. This mower is quick and light, and strong. It provides a nice cut. The briggs and stratton engines are way better than the competion in my opinion and not all mowers have them. I do semi commercial work with this mower and it is awesome. Hard plastic wheels don't wear out quick. In really long tall thick grass you might need to raise the wheels cause the engine is a bit on the small side. This mower is awesome!!!
Date published: 2017-04-18
Rated 1 out of 5 by from What a lemon! This mower stopped working properly after less than one season of summer use on a s... What a lemon! This mower stopped working properly after less than one season of summer use on a small yard. It started losing power while operating, it would still cut but you could hear it begin to die, and sometimes it would. We took it to a shop listed on the site as accepting the warranty, only for them to not. We had to spend $60 for a new carburetor, which didn't even end up fixing the problem. What a waste of over $200. Thought we'd be smart not buying the cheapest one. Super disappointed.
Date published: 2017-09-08
Rated 1 out of 5 by from I have bought 2 of these mowers in the last year and a half. I only have a yard that is maybe 200... I have bought 2 of these mowers in the last year and a half. I only have a yard that is maybe 2000 square feet and mow every 10 days or so. I keep it in a dry shed. I did not keep receipt on first one but now the second one has gone out and I took it to dealer who told me the crank shaft was bent somehow. Even though there was no evidence of impact on blades, I would have to put down a $75 deposit to have briggs and stratton look at it for warranty purposes. Do NOT waste your hard earned money on these money pits. It was severely disappointing and I will be urging anyone who is even considering buying a mower to stay as far away as possible from these enormous pieces of junk.
Date published: 2017-09-22
Rated 1 out of 5 by from It is hard to push. Grass gloggs easily even after... It is hard to push. Grass gloggs easily even after being dumped. If you have a medium size yard this is not recommended.
Date published: 2017-09-19
Rated 1 out of 5 by from Quit running after 1 mowing session. Have to take back... Quit running after 1 mowing session. Have to take back and get another or have warranty work done. Not happy
Date published: 2017-09-06
Rated 4 out of 5 by from The first one I brought home would not start. The next one works very well. There is no side disc... The first one I brought home would not start. The next one works very well. There is no side discharge port so it is either bag or mulch. The engine is very loud with no engine speed control. The drive control lever is located too far from the handle causing discomfort for thumbs. These are minor problems but they are there and noticeable. Still a good machine for the 6 weeks that I have been using it. I had no problems with customer service and picked up the machine at the dealer.
Date published: 2017-09-05
Rated 5 out of 5 by from I can't believe I got such a good deal on a self-propelled mower! And, it does a great job on my... I can't believe I got such a good deal on a self-propelled mower! And, it does a great job on my yard! My friend came over after she got off work & I had to show it off. Then I had to take her over to get one! What a deal!! Super power, easy controls, and it cuts great!
Date published: 2017-03-21
Rated 5 out of 5 by from Great price Love it. Good quality product. Recommend and great price
Date published: 2017-03-18
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