Walk-Behind Lawn Mower: Needs routine maintenance

Routine maintenance includes changing the oil, cleaning or replacing the air filter, replacing the spark plug, adjusting the drive belt, draining fuel at the end of the season and keeping the blade sharp.

If your mower won't start because you haven't been performing maintenance, view this troubleshooting video to help you get the engine started:

Lawn Mower Won't Start Troubleshooting Video: Fuel, Ignition and Compression Problems

These repairs may help solve your Walk-Behind Lawn Mower problem:

Tune up a lawn mower

Air filter

Tune up a walk-behind mower to prevent engine wear and improve its efficiency. A walk-behind mower tune-up includes changing the oil, spark plug and air filter. It could also include sharpening or replacing the blade.

For manuals, repair guides, and specific part recommendations, enter your model number.

Replace a lawn mower blade

Blade

For safety and for a cleaner cut, replace a mower blade that's bent, chipped, broken or otherwise damaged.

For manuals, repair guides, and specific part recommendations, enter your model number.

Change a lawn mower oil and air filter

Oil

You should change your lawn mower's oil every 50 hours and before storing the machine in the fall. Over time, heat and friction break down the oil's ability to lubricate moving parts; changing the oil can help extend engine life. Change or clean the air filter, depending on your model; as it becomes clogged, it works less efficiently.

For manuals, repair guides, and specific part recommendations, enter your model number.

Adjust a lawn mower drive belt

Drive belt

If you feel slightly more resistance when you pull a self-propelled mower back than when you push it forward, debris could be caught in or near the drive belt, or the belt guides could be out of adjustment. Check the belt guides for correct clearance from the belt when the blade engagement lever is engaged.

For manuals, repair guides, and specific part recommendations, enter your model number.