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21 in. 140cc OHV Briggs & Stratton Walk-Behind Gas Lawn Mower
  • Yard Machines
  • Model # 11A-B1BE729
  • Internet # 204686133
  • Store SKU # 959633

21 in. 140cc OHV Briggs & Stratton Walk-Behind Gas Lawn Mower


Compare to Discontinued Model View Product

Discontinued Model


Yard Machines

Model # 11A-B13M729

Internet # 203307098

21 in. 140 cc Gas Walk-Behind Lawn Mower-DISCONTINUED

This item has been discontinued.
The Home Depot no longer carries this specific product.





Model # 11A-B13M729

Internet # 203307098

The Yard Machines 21 in. Briggs & Stratton Gas High-Wheel Walk-Behind Push Mower features a symmetrical deck design that helps provide good grass clipping circulation so that the blade can cut the clippings multiple times. This mower features a powerful m

California residents: see  Proposition 65 information

  • 140 cc Briggs & Stratton engine offers powerful performance
  • 21 in. cutting path for optimal coverage
  • 6 cutting heights ranging from 1-1/4 in. to 3-3/4 in. to manicure the lawn to your specifications
  • Dual lever height adjusters for quick position changing
  • S-blade helps provide a clean cut
  • 2-in-1 cutting deck creates great airflow to mulch grass into fine clippings
  • Rear bagger has a large opening for great clipping collection and easy emptying
  • 11 in. high rear wheels for maneuverability on uneven terrain
  • ReadyStart system provides starting with no priming or choking required
  • 21 in. 2-in-1 newly designed cutting deck creates better airflow to mulch grass into finer clippings for a cleaner cut
  • Note: Product may vary by store
  • Home Depot Protection Plan:

    Home Depot Protection Plan

Info & Guides

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Assembled Depth (in.) 
70 in 
Assembled Height (in.) 
36 in 
Assembled Width (in.) 
22 in 
Blade Length (In.) 
21 in 
Mower Deck Width 
21 in 
Rear wheel size (in.) 
Size of Yard 
1/4 Acre or Less 
CA (CARB) Compliant 
CARB Compliant 
Cutting Options 
Cutting Width (in.) 
Engine Displacement (cc) 
Bagger,Foldable handle,High wheel,Rust resistant deck,Tool-free adjustments 
Fuel Type 
Fuel tank capacity (gallons) 
Engine oil 
Lawn Mower Type 
Walk Behind 
Manual Push Mower Type 
Maximum cutting height (in.) 
Minimum cutting height (in.) 
Mulching Capability 
Number of Blades 
Oil capacity (oz.) 
Product Weight (lb.) 
71 lb 
Recommended oil 
SAE 30 
Start Type 
Uneven with Obstacles 
Walk Behind Mower Type 
Manual Push 
Warranty / Certifications
Manufacturer Warranty 
2 year limited 


Rated 2.8 out of 5 by 109 reviewers.
Rated 1.0 out of 5.0 by Also having problems with engine Only have used about 5 times so far. I put gas in engine and it seem that every other time or so gas just runs out of the carb. I took it to B&S repair, after the gas was completely gone from the engine so my car wouldn't be filled with gas fumes. They had it for a week and then told me they put gas in it, started it, and there was nothing wrong with it. They charged me $25 for simply starting it. April 9, 2013
Rated 1.0 out of 5.0 by Somethings Wrong with system enginering Bought it last year, tried to use it this year, I remember trying last year after a few uses and it didnt start and now Im trying to work the kinks out and the reviews are the same problems as mine, tired spark plug, compression, fuel, clean the bowl, idk whats going on with it but its maybe the key way snapped and cant tell or engine kill switch connection is my best guess but the spark plug still sparks so I am stumped, too bad they never gave advise on whats wrong with the common problems. I feel ripped off. Find a mower with a primer bowl and choke lever. Get something else. May 5, 2013
Rated 1.0 out of 5.0 by The engine is a lemon I bought this and from the very beginning the engine would only run for a few minutes and the die. If I waited awhile, I could start it again, but again it would only run for a few minutes. However, after using it for a while longer now it won't start at all! If you go to the Briggs & Stratton 550ex webpage, you'll see the engine only has a 1.8 out of 5 stars rating. I don't know what they did, but B&S really messed up this engine model. I took the mower to a B&S engine repair shop for warranty service, and hopefully that won't take too long, but this whole process is ridiculous. Stay away from this mower; just go somewhere else and find another brand. July 17, 2012
Rated 1.0 out of 5.0 by Junk Do Not Buy I purchased this mower last July (2012) and used it about 6 or 7 times on our small yard before our grass cutting season ended. Problems from the beginning. Engine would stop after 1/2 tank of gas used. If I refilled tank to the top, I then could continue mowing until down to half tank again. In this new season (2013) the mower refuses to start at all. The manufacturer as cheapened this machine down to the point of junk. April 4, 2013
Rated 1.0 out of 5.0 by No power This product was purchased at the end of the season last year. Lack of time and in store stock prompted the purchase. I have since repaired my former mower that was 7 years older because this machine is COMPLETLY USELESS. If you use this mower in between visits from a professional landscaper it probably still wont do the job. April 5, 2013
Rated 1.0 out of 5.0 by Worst mower ever DO NOT BUY THIS MOWER! I bought this mower last year in the end of September and used it twice in October and once in November before the rain started. I had trouble with the engine staying on and had trouble starting the engine all three times I used it. I just pulled it out of the garage to mow the lawn and it won't start at all. Checked the air filter. Checked the spark plug. Put brand new fresh gas in and....nothing. This is the biggest failure in push mower history. An absolute waste of time, energy, and money! DO NOT BUY THIS MOWER March 9, 2014
Rated 3.0 out of 5.0 by Stalled after first 10 mins. Got mower home, assembled handle and put gas in and it started on second pull,however after 10 minutes engine started to rev up and down a few times and shut down!Re-start and stalled again numerous times so I was going to put in my truck and return. Finished my yard with my neighbors mower and went to try starting again and it cranked right up and ran good . Ran smooth and no sign of stalling. If it happens again it will be returned! June 25, 2012
Rated 1.0 out of 5.0 by Schizo Mower I bought the 2011 version of this, and from the beginning the engine seemed to have a mind of its own. It will work for 5-6 mowings, although stops a lot and I have to push the choke button to re-start, and then there will be a day when it just won't start. Or better yet it'll run for 5 minutes while I mow 2 strips and then will quit, then can't get it restarted the rest of the day or night. Then 2 days later it'll start and work fine. As I'm typing this, my neighbor is mowing my yard after seeing me once again fighting with it. He said "I've seen that thing act up on you so many times and even spew out smoke, so I figured I'd give you a break." It's time to get a better mower ! July 27, 2013
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