How to prevent grass buildup on your walk-behind lawn mower
Grass that builds up on the underside of your walk-behind lawn mower deck disrupts airflow needed to lift the grass for a clean, even cut. It also can lead to rust and corrosion of the mower deck. This video gives 3 tips on how to prevent the grass from clumping under your mower deck.
For more DIY help, including troubleshooting videos and step-by-step repair guides, check out our walk-behind mower repair help’ section. In addition, find the lawn mower parts you need to fix your mower.
The following tips can help avoid grass buildup under a lawn mower deck. Caked-on clippings disrupt the airflow and encourage rust and corrosion.
Use a spray lubricant
MO-DECK keeps grass from sticking and prevents rust.
Mow only when it's dry
Grass is sticky when wet.
Keep clippings short
Cut no more than 1/3 of the grass height. Shorter clippings blow away easier—and a trim is less of a shock for the grass than a crewcut.
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…
Repair guides for 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 wheel
Learn how replace a damaged wheel on a walk-behind lawn mower—it's a quick, easy fix.…
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.
Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…
Get answers to frequently asked questions about Sears and Sears PartsDirect.…
A blade obstruction, bad recoil starter or locked-up engine can prevent the pull cord on your mower from working. See ho…