Craftsman
Front-Engine Lawn Tractor

Model #502254171 Craftsman lawn mower

Here are the diagrams and repair parts for Craftsman 502254171 lawn mower, as well as links to manuals and error code tables, if available.


There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Save to my profile

    Showing 10 of 330 parts

    Nut

    #38

    Replacement parts Diagram

    Nut

    Part #792075

    The manufacturer no longer makes this part, and there's no substitute part

    Lawn Tractor Brake Pad Holder

    #23

    Replacement parts Diagram

    Lawn tractor brake pad holder

    Part #790025
    ?
    Manufacturer substitution
    This part replaces 790025. Substitute parts can look different from the original.
    This part replaces 790025
    $14.00

    In Stock

    Retaining Ring

    #31

    Replacement parts Diagram

    Retaining ring

    Part #792072
    ?
    Manufacturer substitution
    This part replaces 792072. Substitute parts can look different from the original.
    This part replaces 792072
    This item is not returnable
    $2.16

    In Stock

    Gear

    #5

    Replacement parts Diagram

    Gear

    Part #778122A
    ?
    Manufacturer substitution
    This part replaces 778122A. Substitute parts can look different from the original.
    This part replaces 778122A
    $26.71

    In Stock

    Lawn Tractor Transaxle Intermediate Gear

    #7

    Replacement parts Diagram

    Lawn tractor transaxle intermediate gear

    Part #778124A
    ?
    Manufacturer substitution
    This part replaces 778124A. Substitute parts can look different from the original.
    This part replaces 778124A
    $23.21

    In Stock

    Lawn Tractor Transaxle Output Shaft Flange Bushing

    #27

    Replacement parts Diagram

    Lawn tractor transaxle output shaft flange bushing

    Part #780105A
    ?
    Manufacturer substitution
    This part replaces 780105A. Substitute parts can look different from the original.
    This part replaces 780105A
    This item is not returnable
    $5.95

    In Stock

    Lawn & Garden Equipment Washer

    #43

    Replacement parts Diagram

    Lawn & garden equipment washer

    Part #780108
    ?
    Manufacturer substitution
    This part replaces 780108. Substitute parts can look different from the original.
    This part replaces 780108
    This item is not returnable
    $3.01

    In Stock

    Lawn & Garden Equipment Washer

    #33

    Replacement parts Diagram

    Lawn & garden equipment washer

    Part #780109
    ?
    Manufacturer substitution
    This part replaces 780109. Substitute parts can look different from the original.
    This part replaces 780109
    This item is not returnable
    $2.95

    In Stock

    Lawn Tractor Transaxle Shift Fork

    #35

    Replacement parts Diagram

    Lawn tractor transaxle shift fork

    Part #784267
    ?
    Manufacturer substitution
    This part replaces 784267. Substitute parts can look different from the original.
    This part replaces 784267
    $52.91

    In Stock

    Lawn Tractor Brake Pad

    #24

    Replacement parts Diagram

    Lawn tractor brake pad

    Part #799021
    ?
    Manufacturer substitution
    This part replaces 790006. Substitute parts can look different from the original.
    This part replaces 790006
    $15.78

    In Stock

    Symptoms common to all riding mowers & tractors

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

    Main causes: worn or broken ground drive belt, bad seat switch, transaxle freewheel control engaged, transaxle failure, dirty carburetor
    Main causes: damaged cutting blade, worn deck pulley, damaged mandrel pulley, loose fasteners on mower deck components
    Main causes: engine overfilled with oil, leaky head gasket or sump gasket, damaged carburetor seals, cracked fuel pump, broken fuel line
    Main causes: punctured tire or inner tube, leaky valve stem, damaged wheel rim
    Main causes: unlevel mower deck, dull or damaged cutting blades, worn mandrel pulleys, bent mower deck, engine needs tune up
    Main causes: damaged tie rods, bent or worn wheel spindle, worn front axle, damaged sector gear assembly
    Main causes: worn or broken blade belt, broken belt idler pulley, blade clutch cable failure, bad PTO switch, damaged mandrel pulleys
    Main causes: shift lever needs adjustment, neutral control needs adjustment
    Main causes: clogged carburetor, damaged flywheel key, dirty spark plug, stale fuel, improper valve lash, engine needs a 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 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
    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 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

    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

    Riding lawn mower engine spins but won't start video

    By Sears PartsDirect staff

    Troubleshoot fuel, spark and compression issues.

    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 change the Smart Switch Ignition password on a lawn tractor video

    By Sears PartsDirect staff

    See how to unlock the factory default start code so you can set your own passcode.