John Deere D120 42 in. 21 HP Hydrostatic Front-Engine Riding Mower - California Only-BG20659 - The Home Depot
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John Deere

Model # BG20659

Internet # 202585939

Store SKU # 656734

D120 42 in. 21 HP Hydrostatic Front-Engine Riding Mower - California Only

John Deere D120 42 in. 21 HP Hydrostatic Front-Engine Riding Mower - California Only

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



Model # BG20659

Internet # 202585939

Store SKU # 656734

Delivery within 7-10 days by a local John Deere representative. At Delivery the customer will be taught by John Deere how to operate and maintain the mower. The John Deere 100 Series 42 in. 21 HP John Deere 5-Speed Hydrostatic Front-Engine Riding Mower fe

  • Assembled dimension: 52 in. W x 70 in. D x 46 in. H
  • 5-speed hydrostatic transmission and 2 foot control pedals allow you to set your own pace while mowing
  • 42 in. deck with the edge cutting system offers a smooth underside to help prevent grass buildup
  • 18 in. turning radius allows for easy movement around obstacles
  • Wash port allows you to easily clean the deck underside
  • Full-length welded steel frame to help ensure strength
  • Cast-iron front axles for added durability
  • 16 cutting heights from 1 in. to 4 in. in 1/4 in. increments allow for different cuts depending on grass type or season
  • Travels at speeds of up to 5.5 mph forward and 3.2 mph in reverse for efficiency
  • Cruise control helps provide a consistent mowing speed
  • Includes high-back seat, glove box with cover, cup holder and color-coded controls for comfort
  • Available for sale in California only

Info & Guides

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Assembled Depth (in.) 
70 in 
Assembled Height (in.) 
46 in 
Assembled Width (in.) 
52 in 
Front wheel size (in.) 
Mower Deck Width 
42 in 
Rear wheel size (in.) 
Size of Yard 
1 - 2 Acres 
Turning radius (in.) 
CA (CARB) Compliant 
CARB Compliant 
Commercial / Residential 
Commercial / Residential 
Cutting Width 
42 in 
Drive type 
Rear-wheel Drive 
Engine Displacement (cc) 
Engine Make 
John Deere 
Engine Make 
OEM Branded 
Cruise Control,Cup Holder,Deck cleanout,Headlights,Hour Meter,Keyed start,Rust resistant deck 
Fuel tank capacity (gallons) 
Horsepower (hp) 
Engine oil 
Lawn Mower Type 
Front Motor Riding 
Maximum cutting height (in.) 
Maximum forward speed (mph) 
Maximum reverse speed (mph) 
Minimum cutting height (in.) 
Mulching Capability 
Number of Blades 
Number of Cylinders 
Single Cylinder 
Number of deck wheels 
Oil capacity (oz.) 
Product Weight (lb.) 
452 lb 
Start Type 
Sloped with Obstacles 
Transmission Type 
Warranty / Certifications
Certifications and Listings 
CARB Compliant 
Manufacturer Warranty 
2 years or 120 hours whichever occurs first 


Rated 3.5 out of 5 by 14 reviewers.
Rated 5.0 out of 5.0 by Nothing runs like a Deere! I have now had my Deere for two years, and in two years time I have had NO problems at all, and I mean at all. Some of my neighbors have gotten other riding mowers (newer than mine), they have already had problems. Mine starts the first time every time, cuts right (nice and even), hauls just fine and is very easy to operate. I might be a bit biased in my assessment, ok so be it. But all I know is this, that after two years my Deere is still running problem free. Now don't kid yourself I put this Tractor through it's paces, and it goes through it all. So YES I would recommend a John Deere to anybody with NO regret. May 14, 2014
Rated 1.0 out of 5.0 by notning like my past john deere mowers this mower has 41 hours on it & already has two belt pulleys bad when I bought this mower new I paid for the bagger system & they never put the high lift blades on after using twice I realized this. this is my third deere first one was purchased in 1976 got twenty years out of it be lucky to get 5 out of this one June 23, 2014
Rated 1.0 out of 5.0 by Not what I expected With the Name brand of John Deere, and the price I expected a much better quality of equipment. This mower is very poorly made, does not handle well and in general am very disappointed in it. I would like to return the mower completely. Am waiting for a call fromt he dealership to see what my options are. Will not buy another small lawn tractor. May 30, 2014
Rated 4.0 out of 5.0 by Good for smaller lots I had the previous model, LA120, and I abused it but it kept going strong. Easy to service, the battery is still good after 7 winters. I gave it to a neighbor he uses alot. I used this for hauling, pulling, and cutting 1-2 times a week. The transaxle started slipping on inclines after about 700 hours, my neighbor replaced the fluid and it runs fine. April 11, 2014
Rated 3.0 out of 5.0 by This product has problems. I've had the 120 for two years now and it's been in the shop 3 times already and for the same thing. The spring cable that engages the snow auger or grass deck keeps falling off very poor design. I had a Murray for 12 years and never had a problem. It makes you think is john deere better quality. December 23, 2013
Rated 5.0 out of 5.0 by First impressions After my girlfriend wanted to buy a riding lawn mower for her 3/4 acre hilly lawn, I suggested this mower to her. Comparing it to my (other than JD) mower that I bought from a client, I have these observations: Pros: Smooth ride; much quieter; tighter turn radius; clean level cut; foot pedals for forward/reverse Cons: Seat cutoff switch is too sensitive if you have to adjust your sitting position to avoid low limbs or lean too much on a side slope; using the catcher it is difficult to determine if the bags are full (requiring you to look behind you and seat cut-off may engage) Overall, I believe this mower to be far superior to my mower which was comparably priced. Oh, and one more con, now I want to replace mine with one like hers. April 26, 2013
Rated 5.0 out of 5.0 by A great investment I bought the JD d120 a little over a year ago based on reputation and marketing, and have been throughoughly impressed. I did zero maintenance on it at all except putting more gas in it when it stops running because its out of gas. I started working nearly 7 days a week this spring so have been depending on my wife to mow the yard but she isn't very smart and has blurry vision. The mower is very easy to use, even for her. July 6, 2013
Rated 1.0 out of 5.0 by Very poor engine quality/life span I have the LA125 the cousin to this D120. The quality of the engine is very poor in my opinion. Don't expect the 120 to last as long as you think it should. For the amount of money you are spending, it should have a much longer life. September 28, 2013
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Store Exclusive. This item is available for purchase in select stores only.