Riding mower & lawn tractor repair guides

If your riding lawn mower won't start, it runs rough or it doesn't cut grass like it should, let Sears PartsDirect help you learn how to fix it. We have easy-to follow riding lawn mower repair guides and videos, as well as expert troubleshooting advice in our DIY repair help section. Once you find out which part you need to replace, search your model number to find the complete list of parts for your riding mower or lawn tractor.

riding-mowers-tractor

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 the starter motor on a riding lawn mower

If you hear the solenoid click but don’t hear the starter motor spin when you turn the key, follow these steps to replace it.

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
How to replace the flywheel key on a riding lawn mower

If the engine won't restart after hitting a stump or rock, the problem could be a sheared flywheel key. Follow these step-by-step instructions to replace it.

Repair difficulty
Time required
60 minutes or less
How to replace the starter solenoid on a riding lawn mower

Replace the starter solenoid if it doesn't click when you turn the ignition key.

Repair difficulty
Time required
30 minutes or less
March 1, 2017
By Lyle Weischwill
How to replace the seat on a riding lawn mower

A broken seat can keep the mower from running.

Repair difficulty
Time required
15 minutes or less
How to replace the seat switch on a riding lawn mower

Follow the steps in this guide to install a new riding mower seat switch in about 15 minutes.

Repair difficulty
Time required
15 minutes or less
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
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
January 1, 2015
By Lyle Weischwill
How to replace a riding lawn mower rear tire

Your mower can’t run on a damaged rear tire. Here’s how to install a new one.

Repair difficulty
Time required
60 minutes or less
January 1, 2015
By Lyle Weischwill
How to rebuild a riding lawn mower carburetor

Get your sputtering carburetor running smoothly in 60 minutes.

Repair difficulty
Time required
60 minutes or less
January 1, 2015
By Lyle Weischwill
How to replace a riding lawn mower carburetor

If the engine of your lawn tractor surges or is hard to start, the carburetor could be the problem. Follow these steps to install a new one.

Repair difficulty
Time required
45 minutes or less
January 1, 2015
By Lyle Weischwill
How to replace a riding lawn mower blade

If a blade on your mower is dull or bent, replace it following the steps in this repair guide.

Repair difficulty
Time required
30 minutes or less
January 1, 2015
By Lyle Weischwill
How to replace a riding lawn mower spark plug

If the engine is hard to start or if the spark plug electrode is burnt or cracked, take 15 minutes to replace it.

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

If you're not getting spark from a good spark plug, the problem could be the ignition coil. Follow these step-by-step instructions to replace it.

Repair difficulty
Time required
30 minutes or less
January 1, 2015
By Lyle Weischwill
How to replace a riding lawn mower fuel filter

Help your mower run better by replacing the fuel filter during your riding mower's annual tune-up.

Repair difficulty
Time required
15 minutes or less

Repair guides for front-engine lawn tractors

How to replace a blade clutch cable on a riding lawn mower

If the blades don't spin on your riding mower when you shift the lever, the blade clutch cable could be broken. Here’s how to install a new one.

Repair difficulty
Time required
30 minutes or less
How to replace a ground drive belt on a riding lawn mower

Replace the ground drive belt if it's broken or too worn to spin the transaxle pulley.

Repair difficulty
Time required
45 minutes or less
How to replace the brake interlock switch on a riding lawn mower

If the engine won’t start even though the brake is on, the brake interlock switch could be at fault. Here’s how to replace it.

Repair difficulty
Time required
30 minutes or less
January 1, 2015
By Lyle Weischwill
How to replace a riding lawn mower front tire

Get your mower moving again by using these instructions when replacing a damaged front tire.

Repair difficulty
Time required
60 minutes or less
How to replace a riding lawn mower blade drive belt

Replace the blade drive belt if it's broken or won't spin the cutting blades because of wear.

Repair difficulty
Time required
45 minutes or less

Repair guides for rear-engine riding mowers

How to replace the electric clutch on a zero-turn riding mower

The electric clutch mounts on the engine crankshaft and controls the cutting blades. This step-by-step guide explains how to install a new one.

Repair difficulty
Time required
45 minutes or less
How to replace the blade belt on a zero-turn riding mower

A worn or broken blade belt on a zero-turn riding mower prevents the mower blades from working. Here’s how to replace the blade belt.

Repair difficulty
Time required
30 minutes or less
How to replace the ground drive belt on a zero-turn riding mower

The ground drive belt connects the engine crankshaft to the transmission pulleys to drive the rear wheels.

Repair difficulty
Time required
90 minutes or less
How to adjust the neutral control on a zero-turn riding mower

Adjust the neutral control if your zero-turn riding mower creeps forward or backward while both steering lap bars are in the neutral position.

Repair difficulty
Time required
45 minutes or less
How to replace a cutting blade on a zero-turn riding mower

Replace a bent or dull cutting blade in 30 minutes or less.

Repair difficulty
Time required
30 minutes or less
How to remove the mower deck on a zero-turn riding mower

Follow the steps in this guide to remove the mower deck for cleaning or inspection.

Repair difficulty
Time required
30 minutes or less
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
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.