Easy DIY Lawn Mower Repairs



By Kim Hillegass, Sears PartsDirect

I love a freshly mowed lawn. The crispness of the neatly cut grass and the sense of order it brings to my mind is extremely satisfying. However, the lawn mower always seems to break down just when I need it most. When that happens, I count on my skills and Sears PartsDirect’s wealth of knowledge to do most repairs myself.

These easy-to-do lawn mower repairs can help you, too, return a sense of order to your life and stop the evil eyes from neighbors wondering why your grass is so tall.

Up for more of a challenge or just want more information about your walk-behind lawn mower? Head over to our complete lawn mower repair help page, for everything from troubleshooting tips and repair guides to common parts and frequently asked questions. 

Replacing a Lawn Mower Blade

The blade on a lawn mower must be sharp and straight to cut grass evenly. If you hit a rock or other hard object when mowing, ignspect the blade to see if it's bent or chipped; if so, replace it.

You can sharpen it yourself, but run the risk of taking off more on one side than the other, which throws the blade off balance. Even if you are a master sharpener, eventually the blade wears down and must be replaced.  

It's simple and quick to replace a mower blade, following the instructions in our DIY repair guide How to Replace a Mower Blade.

Replacing a Lawn Mower Wheel

If a wheel on your lawn mower is damaged or is so worn down that the wheel slides instead of rolls, it's time to replace the lawn mower wheel. 

Replacing the wheel is an easy and quick job; just follow the instructions in our DIY repair guide How to Replace a Lawn Mower Wheel.

Replacing a Lawn Mower Spark Plug

The spark plug ignites the air and fuel mixture in the lawn mower's engine. Replace the spark plug every season or as often as directed in your owner's manual.  Also replace the spark plug if it's damaged or fouled, which can make it hard to start the mower or make the mower sputter.

You can install a new spark plug in minutes. See our DIY repair guide How to Replace a Mower Spark Plug for instructions.

Replacing a Lawn Mower Drive Belt

The drive belt on a lawn mower connects the engine to the gear case, which rotates and propels the mower forward. If the belt breaks or wears down, the mower won't move forward easily.

Replacing the drive belt on a mower is a fairly easy repair if you follow the instructions in our DIY repair guide How to Replace a Mower Drive Belt.

Replacing a Lawn Mower Recoil Starter

Pulling the rope on the recoil starter makes the crankshaft spin and starts the engine. If the crankshaft doesn't spin, the recoil starter is probably broken. On pre-2014 mowers, just getting to the recoil starter can be a hassle, but if your mower has an overhead valve engine produced after 2014, this repair is much easier to do. Our DIY repair guide How to Replace the Recoil Starter on a Lawn Mower shows how simple the repair is.

Replacing a Lawn Mower Carburetor

The carburetor mixes fuel with air and then sends the fuel mix into the engine cylinder where it combusts to drive the piston. If the carburetor is clogged or damaged, the engine either won't start, or it starts but run rough.

Fortunately, replacing the carburetor on your lawn mower is easy to do following the directions in our DIY repair guide How to Replace the Carburetor on a Lawn Mower.

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