Troy-Bilt Self-Propelled Lawn Mower TB120 21” Review

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If you’re in the market for a new self-propelled lawn mower, you may be wondering if the Troy-Bilt TB120 21” self-propelled lawn mower is the right choice for you. In this detailed review, we’ll take an in-depth look at this popular lawn mower and help you decide if it’s the right fit for your needs. Keep reading to learn more!

The Facts

The Troy-Bilt 21″ self-propelled lawn mower is a popular choice for homeowners with medium to large yards. This lawn mower features a durable steel deck, 21″ cutting width, and 7-position height adjustment. It also has a powerful 159cc Troy-Bilt OHV engine that delivers plenty of power to get the job done quickly and easily. Best of all, this lawn mower is backed by a 2-year limited warranty from Troy-Bilt.

When it comes to assembly, the Troy-Bilt 21″ self-propelled lawn mower is pretty straightforward. The included instructions are easy to follow, and most people should be able to have the lawn mower assembled and ready to go in about 30 minutes or so.


As far as performance goes, the Troy-Bilt 21″ self-propelled lawn mower does a great job on most types of grass. The blade cuts cleanly and evenly, and the engine has plenty of power to make quick work of even the thickest grass. The self-propulsion feature is also very helpful, especially if you have a large yard. Overall, we were very impressed with the performance of this lawn mower.


According to Amazon, some people have complained that:

The absolute highest wheel setting is lower than I would ever want to cut my lawn. That I find awful. Otherwise I have no problem with this machine.

Stephen A. on Amazon

Nothing but problems with this mower, and I take care of my mowers. Constant throttle problems. Pieces of the throttle assembly mechanism would always come loose and I’d have to take the air filter assembly off to put it back together. Eventually the housing that holds the fly wheel coord broke off… something that is mentioned in other reviews.

Anonymous user on Amazon

There are much cheaper lawn mowers out there that even get better reviews:

Highest Rated Self Propelled Lawn Mowers
Highest Rated Self Propelled Lawn Mowers
  • Mulching feature works great
  • Lighter weight and smaller size make it pleasant to use
  • It can be stored in small places
  • It makes no noise
  • It has adjustable height feature
Overall Best Self Propelled Lawn Mowers
Best Self Propelled Lawn Mowers
  • Sharp metallic blades and plastic body to avoid corrosion
  • Two batteries are present
  • Multiple features like mulching, bagging and side discharge
  • It has folding option and easy height adjustment
  • It has energy saving mode
Best Gas Powered Lawn Mower
Best Gas Powered Lawn Mower
  • It has multiple speed features
  • It is a powerful mower
  • Mulching can be done on uneven property
  • It can make your lawn weed free


The Troy-Bilt 21″ self-propelled lawn mower is definitely worth considering. But overall, there are much better models on the market.

troy bilt self propelled lawn mower
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After doing my master’s in agriculture, I went on with this field for more than 15 years because I love working in green. I have experienced using modern machinery and techniques that can help farmers and landscapers to achieve something great. My goal will be to deliver you the best reviews and information to make the right decision.

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