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Model #12A-A1BA729

Store SKU #339796

Store SO SKU #639830

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
  • See More Details

Product Overview

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

Info & Guides

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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.)
72
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

151Questions28Answers

Where can i buy a bag for the mower?

Asked by ML August 21, 2020
1
Answer

Did you try contacting the manufacturer parts department?

l need the rubber on my frontwheel or do l need a new wheel the rings is in good shape

Asked by fili May 26, 2020
2
Answers

You can find the wheel online or get it from harbor freight tools..

Where is this machine available?

Asked by Marc April 29, 2020
3
Answers

I purchased mine from the Home Depot in Chalmette, La.

How is the grass catcher secured to the mower to prevent it from dragging on the ground while mowing?

Asked by MICHAELSCHMITT April 25, 2020
1
Answer

The catch basket just clips onto the top and bottom rod behind the mower.

I PUMP IT AND GET IT STARTED THEN IT DIES AITHIN A MINUTE. HAS GAS & OIL.

Asked by URSKO April 16, 2020
2
Answers

You may want to check the spark plug.

How do check if the spark plug is working

Asked by Slick April 5, 2020
3
Answers

Pull the plug wire off and unscrew the plug. First thing is to inspect the plug for carbon buildup. Generally, its good to just clean the plug at this point. Typically, spark plugs don't fail that often - they just get fouled by either carbon, gas or oil. To continue, you can reconnect the plug wire to it. If you're not comfortable, wear some gloves and holding the spark plug by the wire, ground the outside of the plug against the metal of the mower. Have someone help you to slowly pull the starter cord. You should see the current arc across the gap if the plug is working. You can check further to see if there is spark by holding the end of the plug wire itself against the metal. Pull the starter cord again to check for spark.

AM I ABLE TO MULCH WITH MODEL # 12A-A1BA729?

Asked by Larry May 6, 2019
3
Answers

Yes - it is very simple. You just remove the bag and the flap is spring loaded and closes to make it a mulcher.

How do I drain the oil

Asked by Tntoad April 4, 2019
6
Answers

Open oil fill cap and tilt mower on it's side to drain oil.

How to attach bag to mower?

Asked by Jgibson October 12, 2018
5
Answers

Lift back flap and hook on.

Still confused about the Briggs and Stratton motor. I DID get the model number off of the lawn m...

Asked by LHGirl September 28, 2018
2
Answers

The Models: 80000, 90000, 093J00 & 100000 are all basically the same. Only difference is the displacement, bore, stroke with the 100000 having a different spark plug gap. Otherwise they all use the same service parts. See page 10 of your manual for specifications. Hope this helps, as I didn't quite understand why you needed to know if you had Model 80000 or 90000. Only difference between these 2 are displacement and bore specs

21 in. 140 cc OHV Briggs and Stratton Walk Behind Gas Self Propelled Mower - page 2

Customer Reviews

  • 4
    out of 687 reviews
  • 81% recommend this product
Filter by:
Showing 1-10 of 687 reviews
I'm only giving it 4 stars because we live in Pennsylvania so I have not been able to use it yet....
I'm only giving it 4 stars because we live in Pennsylvania so I have not been able to use it yet. I am excited for the mowing season since replacing a 14 year old mower with this one. It was in clearance and was everything I was looking for!
by JAWS324
This machine exceeded my expectations, much improved on the previous ones
This machine exceeded my expectations, much improved on the previous ones
by Ricardo
1 person found this helpful
So far so good. I've mowed the lawn several times...
So far so good. I've mowed the lawn several times and it starts up. It's easy to use the bagging feature. I've noticed that on a few passes it leaves small patches of uncut grass. This may be due to cutting the grass while slightly wet. It seems to have gotten a little better as I've tamed my lawn.
by Gary
2 people found this helpful
Happy,Happy,Happy
After hours of reviews and comparisons for my wallet I chose the yard machine.Assembly was a snap started right up and cut like a champ with no problems! So far so good . I wanted a honda ,but have no regrets it does the job fine, on a large sloped yard too. A great mower for the price.
by Kevinsane
32 people found this helpful
It is a great lawnmower for the small, flat yard that my daughter has.
The mower was delivered a week earlier than we expected so that was a bonus! It works great, was easy for us to assemble and run. I bought it as a gift for my daughter for her new house.
by loulw61
31 people found this helpful
Simplicity at its finest
How to tell you about my luck with the machine... I own a lawn service so this bad boy goes to work for me most everyday. I borrowed my girlfriends mower after I used it on her yard. It mowed steady and clean. Great mulching, even though I found the blade mounted on upside down! Don't ask. Still it worked. I've used the heavier front wheel drives and this one is light. Three primer pumps and she fires up every time. Grasp the PTO bar and you have a mini dragster. Power holds its own thru varied grass thickness. No speed control, tho. So easy to adjust the height - two numbered levers, not four. Simple, simple, simple. Anyhoo, I bought one just like it. Love it!
by Twisterboy
108 people found this helpful
Self Propel function stopped working
I loved this mower... until it broke. I purchased from Home Depot in fall of 2018 with the extended warranty. Last weekend the self propel function stopped working, pushing this thing on a 95 degree humid day was not fun! I called the customer service number but they couldn't even tell me if it is still under warranty or if the self propel mechanism is covered. They want me to bring it to an authorized service dealer over an hour from my house (that's the closest one) and they will determine if the repair is covered, if not I'm responsible for the cost of repair. I've never heard of a warranty that decides AFTER you bring it for service if they will cover the service. Very disappointed!
by NPaul
Response from Yard Machines SupportJul 24, 2020
Hello, NPaul. We're sorry to hear that you haven't experienced the level of quality that our customers deserve. Your situation has been documented internally and if you would like to discuss this further, please give us a call at 1-800-269-6215. Just mention your case number of 05798649 and we would be more than happy to assist you. We appreciate you taking the time to share your experience. YardMachines
To small of bag, hard to start, does not cut well and the self propel you have to run to keep up ...
To small of bag, hard to start, does not cut well and the self propel you have to run to keep up with it. It is easier to NOT use the self propel and just push it.
by Rich
Response from Yard Machines SupportAug 9, 2019
Hello Rich, we're sorry to hear that you haven't experienced the level of quality that our customers deserve. If you would like to follow up with us on this issue, we would be more than happy to assist you. If you would like to discuss this problem further, give us a call at 1-800-269-6215. Let us know if there is anything else we can do for you. Thank you for taking the time to voice your opinion. YardMachines
This mower constantly choked and died on the grass clippings in my yard. I tried to bag it and m...
This mower constantly choked and died on the grass clippings in my yard. I tried to bag it and mulch it, every time I mowed it choked and died. It survived the first winter, after second winter it wouldn't start. You get what you pay for.
by John
Used it twice so far works great ...
Used it twice so far works great
by Sunrancher
Showing 1-10 of 687 reviews