Lawn Mower Engine Displacement

Rating Standard

• Beginning in 2007, the lawnmower industry switched product power ratings from horsepower to engine displacement. This displacement measures the amount of fuel that exists inside the cylinder at combustion, which is measured in cubic centimeters or cc. This measurement allows easier comparison because engine power is influenced by engine size and configuration.

Engine Size Changes the Displacement

• The larger the engine size on a lawnmower, the larger the displacement will be. This is because the motor cylinder will be bigger, combusting more fuel on each crankshaft cycle. However, consumers should understand that engine displacement only applies to gas-powered lawnmowers. Electric lawnmowers run on entirely different engines and power source.

Troubleshooting

• The engine displacement per engine cycle should stay the same. If the lawnmower seems to be consuming more fuel faster, then there is a leak in the fuel line. This should be identified and fixed immediately. Fuel can ignite on a hot engine and cause a fire.