The smallest push lawn mower is the Yard-Man YM2101. It weighs just 27 pounds and has a cutting width of 21 inches, making it ideal for small yards. If you have a small yard, then the Yard-Man YM2101 is the perfect push lawn mower for you. It only weighs 27 pounds, so it's easy to maneuver around your yard. Plus, it has a cutting width of 21 inches, so it can easily handle smaller areas.