Grass Cutting Safety Tips | Prevent Injuries Before You Mow

Safe grass cutting starts before the engine does—clear the yard of debris, wear sturdy shoes and long pants, keep children and pets inside, and never mow wet grass or steep slopes.

Most mower injuries don’t happen because of a mechanical failure—they happen because someone skipped the five-minute yard walk, mowed in flip-flops, or reached under the deck while the blade was still spinning. The good news: every common mowing accident is avoidable with a short routine and a few hard rules.

What To Do Before You Start Mowing

Walk the entire lawn and remove toys, stones, sticks, wire, glass, and any other objects that could become projectiles. Put on closed-toe, sturdy shoes (no sandals or bare feet), long pants, and close-fitting clothing. Add eye protection and hearing protection if your mower is loud or kicks up dust. Send children and pets inside or to a safe area well away from the cutting path.

Read the operator’s manual for your specific mower—especially the slope limits and safety-device locations. Before you pull the start cord, inspect the blade guard, the drive levers, the shut-off switch, and the discharge chute. If any safety device is loose, broken, or missing, fix it before you cut a single blade of grass.

Mowing On Slopes: The One Rule That Changes By Mower Type

Slope safety is the most common point of confusion because the right direction flips depending on your mower. On a walk-behind mower, mow across the slope (back and forth along the side of the hill) to reduce the risk of the mower rolling onto you. On a riding mower, mow up and down the slope instead—going across increases the rollover risk because the uphill wheel lifts weight off the downhill side. Keep movements slow and gradual; never start, stop, or turn sharply on a hill. Riding mowers should stay at least five feet from drop-offs, retaining walls, and ditches. If the slope is steeper than your manual allows, use a string trimmer or leave that section unmowed—the grass is not worth a rollover.

Gas Mower vs. Electric Mower: Separate Safety Rules

Gas and electric mowers share many precautions, but each has one hazard the other doesn’t.

Gas mowers: Turn the engine off and disconnect the spark plug wire before you touch the blade, clear a clog, or do any maintenance. Refuel only when the engine is off and cool, and do it outdoors—never in a shed or garage, where gasoline vapors can ignite and carbon monoxide can build up in minutes. A running gas mower in a closed space is deadly.

Electric corded mowers: The cord is your biggest hazard. Keep the cord behind your body and mow away from it—drape the cord over your shoulder so you never accidentally run over it. Use a grounded three-prong outlet and a properly rated extension cord. Replace any cord with frayed or cut insulation before the next use.

For either type, stop the mower and shut off the engine before clearing clogs or debris near the blade. Never put your hand near the discharge chute while the engine is running—even if the blade looks stopped.

Looking for the right equipment to keep your lawn neat and safe? Our tested roundup of the best grass cutting tools covers mowers and trimmers that match these safety standards.

Safe Mowing Habits That Become Automatic

The following practices prevent the highest number of emergency-room visits, year after year:

• Keep children and pets inside while the mower is running. No passengers on riding mowers—ever.
• Never mow wet grass.
• Mow forward, never backward. If you need to reverse on a riding mower, look behind you first for children or obstructions.
• Remove no more than one-third of the grass height per cut. Scalping the lawn stresses the turf and increases the chance of clogs that tempt you to reach under the deck.
• Take the key out when the mower is parked and you’re finished for the day. A running mower left unattended is a waiting injury.
• Mow only in good daylight. Dusk or low light hides debris and makes the edge of a drop-off invisible.