Craftsman
Rear-Engine Riding Mower

Model #502251220 Official Craftsman tractor

Here are the diagrams and repair parts for Craftsman 502251220 tractor, 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.

Owner’s manual

    Showing 10 of 429 parts

    Lawn & Garden Equipment Ring Clip#72

    Motion drive Diagram

    E-ring

    Part #STD581075
    Replaced by #812000029
    ?
    Manufacturer substitution
    This part replaces STD581075. Substitute parts can look different from the original.
    BEST SELLER
    This item is not returnable
    In Stock
    $1.91 | 
    20% OFF 
    Was: $2.39
    Lawn Tractor Ignition Switch#4

    Electrical system Diagram

    Ignition switch

    Part #21064
    Replaced by #532365402
    ?
    Manufacturer substitution
    This part replaces 21064. Substitute parts can look different from the original.
    BEST SELLER
    In Stock
    $19.29 | 
    9% OFF 
    Phone Price: $21.29
    Lawn Tractor Tire, Front#74

    Motion drive Diagram

    Tire

    Part #90589
    Replaced by #532122075
    ?
    Manufacturer substitution
    This part replaces 90589. Substitute parts can look different from the original.
    BEST SELLER
    In Stock
    $66.98 | 
    7% OFF 
    Phone Price: $71.98
    Lawn Tractor Starter Solenoid#24

    Electrical system Diagram

    Solenoid

    Part #24285
    Replaced by #7701100MA
    ?
    Manufacturer substitution
    This part replaces 24285. Substitute parts can look different from the original.
    BEST SELLER
    In Stock
    $23.49 | 
    22% OFF 
    MSRP: $30.00
    Lawn Mower Ground Drive Belt, 1/2 x30-1/8-in#54

    Motion drive Diagram

    Belt

    Part #37X65
    Replaced by #37X65MA
    ?
    Manufacturer substitution
    This part replaces 37X65. Substitute parts can look different from the original.
    BEST SELLER
    In Stock
    $19.59
    Lawn Tractor Blade Drive Belt#1

    Mower housing Diagram

    Belt

    Part #37X57
    Replaced by #37X57MA
    ?
    Manufacturer substitution
    This part replaces 37X57. Substitute parts can look different from the original.
    BEST SELLER
    In Stock
    $38.07
    Lawn & Garden Equipment Cotter Pin#23

    Mower housing suspension Diagram

    Hairpin pin

    Part #31X4
    Replaced by #703300
    ?
    Manufacturer substitution
    This part replaces 31X4. Substitute parts can look different from the original.
    BEST SELLER
    This item is not returnable
    In Stock
    $6.69 | 
    13% OFF 
    Phone Price: $7.69
    Lawn & Garden Equipment Lock Nut#39

    Mower housing suspension Diagram

    Nut

    Part #15X73
    Replaced by #41529MA
    ?
    Manufacturer substitution
    This part replaces 15X73. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $6.69 | 
    13% OFF 
    Phone Price: $7.69
    Lawn & Garden Equipment Washer#31

    Steering Diagram

    Washer

    Part #17X161
    Replaced by #703590
    ?
    Manufacturer substitution
    This part replaces 17X161. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $5.99 | 
    14% OFF 
    Phone Price: $6.99
    Washer#27

    Motion drive Diagram

    Washer

    Part #17X36Z

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

    Symptoms common to all riding mowers & tractors

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

    Main causes: punctured tire or inner tube, leaky valve stem, damaged wheel rim
    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: worn or broken blade belt, broken belt idler pulley, blade clutch cable failure, bad PTO switch, damaged mandrel pulleys
    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: clogged carburetor, damaged flywheel key, dirty spark plug, stale fuel, improper valve lash, engine needs a tune up
    Main causes: faulty battery, bad alternator
    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.

    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
    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

    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.

    August 5, 2022

    Introducing new technical repair content that we’re developing for the Sears Technical Institute

    By Lyle Weischwill

    Learn about Sears Technical Institute and the advanced technical content being developed for aspiring appliance techs.

    August 6, 2020

    How to remove a lawn mower blade using a removal tool

    By Lyle Weischwill

    Learn how a blade removal tool makes replacing the blade easier and safer

    April 9, 2019

    Riding mower parts and supplies to stock up on video

    By Lyle Weischwill

    Keep these 6 things on hand to keep the mower season running smoothly.