Walk-behind lawn mower repair guides
If your walk-behind lawn mower won't start, the engine runs rough or the mower doesn't cut grass like it should, learn how to fix it by following the steps in these DIY repair guides and videos. Our lawn mower repair help covers major brands, like Craftsman, Poulan and Snapper. Search your model number to find a complete list of replacement parts, then order the part you need.
Repair guides for Repair guides common to all gas walk-behind mowers
These step-by-step repair guides will help you safely fix what’s broken on your walk-behind lawn mower.
How to rebuild a lawn mower carburetor
The carburetor mixes air with fuel to drive the piston. Rebuild the carburetor if it's clogged or leaks.…
How to replace a lawn mower recoil starter on an OHV engine
Replace the recoil starter if it doesn't move when you pull the starter rope.…
How to replace a lawn mower front deck tray
Learn how to replace the front deck tray on your lawn mower if it's cracked or damaged.…
How to replace a lawn mower ignition coil on an OHV engine
Replace the ignition coil if it isn't sending electric current to the spark plug when you pull the recoil starter rope.…
How to replace a lawn mower drive belt
Learn how to replace the drive belt on your lawn mower if it's worn or broken and won't drive the mower.…
How to replace a lawn mower carburetor
The carburetor mixes air with fuel to drive the piston. Replace the carburetor if it's clogged or damaged.…
How to replace a lawn mower blade
Check your lawn mower blade regularly and replaced it if it's bent or damaged. …
How to replace a lawn mower drive cable
The drive cable engages the transmission to spin the drive wheels and move the mower across the grass. Replace the drive…
How to replace a lawn mower flywheel key on an OHV engine
The flywheel key couples the flywheel to the engine crankshaft. Replace the flywheel key if it's broken.…
How to replace a lawn mower spark plug
Take a few minutes to replace the spark plug during your lawn mower's annual tune-up or if the spark plug is burnt or cr…
How to replace a lawn mower wheel
Learn how replace a damaged wheel on a walk-behind lawn mower—it's a quick, easy fix.…
How to replace a lawn mower starter rope
These step-by-step instructions show how to replace a broken starter pull rope on a walk-behind lawn mower.…
How to replace a lawn mower flywheel key on a flathead engine
When you hit a hard object with your mower, the flywheel can shear to protect more expensive components. Learn how to re…
How to replace a lawn mower safety switch
The safety switch stops the engine when you release the lever on the handle. This repair guide explains how to replace i…
How to replace a lawn mower ignition coil on a flathead engine
If the spark plug doesn't fire when you try to start the mower, you could have a defective ignition coil. Follow these s…
Symptoms for gas walk-behind mowers
Choose a symptom to see related walk-behind mower repairs.
Main causes: damaged cutting blade, loose cutting blade, damaged flywheel key, engine needs tune up…
Main causes: uneven wheel height settings, damaged wheel, dull or damaged cutting blade…
Main causes: engine needs tune up, dirty or clogged carburetor, damaged flywheel key…
Main causes: drive control cable failure, worn or broken drive belt, bad transmission, broken drive wheel…
Main causes: stale gas, engine needs tune up, bad spark plug, dead battery, bad recoil starter, faulty safety switch, ba…
Main causes: dirty carburetor, bad spark plug, clogged air filter, engine choke problems, clogged gas cap vent…
Articles and videos for gas walk-behind mowers
Use the advice and tips in these articles and videos to get the most out of your walk-behind lawn mower.
Get answers to frequently asked questions about Sears and Sears PartsDirect.…
A dull blade leaves grass tips tattered. Sharpen it several times a season. Here's how.…
A blade obstruction, bad recoil starter or locked-up engine can prevent the pull cord on your mower from working. See ho…