1. By Michael Gubesch and Thomas Buchwald
Lawn Mowers
By Michael Gubesch and Thomas Buchwald

2. Rotary Lawn Mowers
Every rotary lawn mower needs a motor to make the blade spin fast enough to cut the blades of grass cleanly.
Most rotary lawn mowers are powered by an internal combustion engine, which runs on either two cycles or four. 

3. Riding Mowers
Riding mowers come in different sizes and types, with different horsepower engines and blade sizes. 
For larger lawns, a garden tractor is a heavy-duty version of a riding mower 
Equipped with an 18 to 24 horsepower engine, a garden tractor can cost $9,000, but popular varieties cost $2,500 to $4,500.

4. Safety and Maintenance
Every year, 75,000 Americans suffer injuries from mowing the lawn. Nearly 10,000 of the victims are children.
Keep a clean machine. Remove debris from the engine screen after every use
Use the right gas.
Respect the blade. Make sure your blade is on tight

5. Technological Advances in Mowing
Robotic lawn mowers can mow your lawn while you do anything. Most robot lawn mowers run on cordless rechargeable batteries, and some are charged by solar power.