DIY riding mower & lawn tractor repair

Why is it that the grass seems to grow faster when your riding mower isn't working right? Fortunately, you can fix your riding mower or lawn tractor yourself, with the help of Sears PartsDirect's DIY repair advice.

To avoid many problems, keep your riding mower maintained by tuning up the engine each season. We have video troubleshooting tips for leveling a mower deck so your mower cuts the yard evenly every time you mow. If your lawn tractor battery dies, avoid vehicle and mower damage by following the procedures in our how to jump-start a riding lawn mower battery video. If the mower is completely dead, watch this riding lawn mower won't turn over or click video. We can also help if your mower engine spins when you turn the key but won't start. To troubleshoot other engine problems, find out how to fix a tire and much more, check out our articles and videos page.

Once you've determined the problem with your mower, follow the steps in our DIY repair guides for front-engine and zero-turn mowers. To find the owner’s manual or a complete list of replacement parts for your riding mower or tractor, search for your model number.

Riding Mowers & Tractors
Symptoms common to all riding mowers & tractors

Choose a symptom to see related riding mower and lawn tractor repairs.

Main causes: dead battery, stale fuel, bad starter solenoid, ignition system problem, bad ignition interlock switch, clogged carburetor
Main causes: punctured tire or inner tube, leaky valve stem, damaged wheel rim
Main causes: damaged tie rods, bent or worn wheel spindle, worn front axle, damaged sector gear assembly
Main causes: faulty battery, bad alternator
Main causes: engine overfilled with oil, leaky head gasket or sump gasket, damaged carburetor seals, cracked fuel pump, broken fuel line
Main causes: damaged cutting blade, worn deck pulley, damaged mandrel pulley, loose fasteners on mower deck components
Main causes: worn or broken ground drive belt, bad seat switch, transaxle freewheel control engaged, transaxle failure, dirty carburetor
Main causes: shift lever needs adjustment, neutral control needs adjustment
Main causes: unlevel mower deck, dull or damaged cutting blades, worn mandrel pulleys, bent mower deck, engine needs tune up
Repair guides common to all riding mowers & tractors

These step-by-step repair guides will help you safely fix what’s broken on your riding mower or lawn tractor.

How to replace a mandrel assembly on a riding lawn mower

Replace the mandrel assembly if the blade shaft vibrates or doesn't spin.

Repair difficulty
Time required
 30 minutes or less
How to replace the air filter on a riding lawn mower

Get your mower running smoothly again by replacing the air filter—it's a quick job you can do yourself, following these steps.

Repair difficulty
Time required
 15 minutes or less
February 1, 2015
By Lyle Weischwill
How to replace a riding lawn mower ignition switch

Get your mower started again by replacing the ignition switch—it's a quick job you can do by following these steps.

Repair difficulty
Time required
 15 minutes or less
Articles and videos common to all riding mowers & tractors

Use the advice and tips in these articles and videos to get the most out of your riding mower or lawn tractor.

May 1, 2017
Troubleshooting a riding lawn mower blown fuse video
By Sears PartsDirect staff

Test the ignition switch and wire harnesses to find the short.

June 1, 2016
How to mow a lawn for healthier grass
By Erin Hynes

How often and tall you mow your lawn has a big impact on its health. Check out these 3 rules.

March 1, 2016
How to level a riding lawn mower deck for an even cut video
By Sears PartsDirect staff

Mower not cutting the grass evenly? Your mower deck might be the problem.