Gas vs electric mowers
Gas, corded, and battery, and what each one needs.
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Gas mowers
A gas mower has a small engine. EPA says it has emission standards for both exhaust and evaporative emissions from small spark-ignition engines. It says its Phase 3 exhaust standards took effect in 2011 or 2012, depending on engine size.
Fuel rules
EPA says E15, a fuel blend of 15% ethanol and 85% gasoline, cannot be used in engines in nonroad equipment, such as lawnmowers. The CPSC says never to refuel the mower when it is running or while the engine is hot.
Corded electric mowers
The CPSC says to cut the area nearest the electrical outlet first, then gradually move away, so you are less likely to run over the cord. The AAP says to use a ground fault circuit interrupter with an electric mower to prevent electric shock.
Battery mowers
The CPSC says to use only the battery and charger provided by the manufacturer with battery-powered tools. EPA says lithium-ion batteries should not go in household garbage or recycling bins, and should go to separate recycling or household hazardous waste collection points.
Which one fits?
We do not pick. Each power source changes what you buy, store, and maintain. Read each maker's manual.
Sources: EPA, Regulations for Emissions from Small Equipment and Tools; EPA, E15 Fuel Registration; CPSC, Power Lawn Mowers (Publication 5126, PDF); American Academy of Pediatrics, HealthyChildren.org, Lawn Mower Safety: Information for Families; CPSC, Home Safe Yard Care (PDF); EPA, Used Lithium-Ion Batteries.
FAQ
General information only. Read the operator's manual before you mow. Keep children and pets indoors or well away from the area you mow, and never let a child ride on a mower as a passenger. The American Academy of Pediatrics says that, in general, children should be at least 12 years old to operate a walk-behind power mower safely and at least 16 to operate a riding mower safely. Before you clear, adjust, or service the blade area, turn the mower off, wait for the blade to stop, and disconnect the spark plug wire; on a battery or corded electric mower, follow the manual to disconnect its power. Refuel outdoors, only with the engine off and cool. Wear sturdy closed-toe shoes and eye and hearing protection. In an emergency, call 911.
Next: cost of owning
Fuel, blades, and upkeep.
