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Craftsman
Front-Engine Lawn Tractor

Model # 502256121 Official Craftsman riding lawn mower

Here are the diagrams and repair parts for Official Craftsman 502256121 riding lawn mower, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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ALL PARTS
Showing 10 of 228 parts  |
Flange Nut 15X79
Flange nut

Part #15X79

Replaced by #703409

?
Manufacturer substitution
This part replaces 15X79. Substitute parts can look different from the original.
$9.27 | 
10% OFF Phone Price : $10.27
In Stock
Bolt STD533107
Bolt

Part #STD533107

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

Lock Nut 15X88Z
Lock nut

Part #15X88Z

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

Idler Pulley 20613
Idler pulley

Part #20613

Replaced by #420613MA

?
Manufacturer substitution
This part replaces 20613. Substitute parts can look different from the original.
This item is not returnable
$25.18 | 
19% OFF Phone Price : $31.18
In Stock
Washer 17X102
#61

Top half diagram

Washer

Part #17X102

Replaced by #703128

?
Manufacturer substitution
This part replaces 17X102. Substitute parts can look different from the original.
This item is not returnable
$6.31
In Stock
Lock Nut 15X85
Lock nut

Part #15X85

Replaced by #703333

?
Manufacturer substitution
This part replaces 15X85. Substitute parts can look different from the original.
This item is not returnable
$8.09 | 
11% OFF Phone Price : $9.09
In Stock
Washer 10851Z
Washer

Part #10851Z

Replaced by #10851ZMA

?
Manufacturer substitution
This part replaces 10851Z. Substitute parts can look different from the original.
$9.97
In Stock
Switch Key 21064PA
#15

Wiring diagram diagram

Switch key

Part #21064PA

Replaced by #421064MA

?
Manufacturer substitution
This part replaces 21064PA. Substitute parts can look different from the original.
$43.79 | 
12% OFF Phone Price : $49.79
In Stock
Push-on-cap 28X23
#61

Mower housing diagram

Push-on-cap

Part #28X23

Replaced by #703948

?
Manufacturer substitution
This part replaces 28X23. Substitute parts can look different from the original.
This item is not returnable
$7.29 | 
12% OFF Phone Price : $8.29
In Stock
Washer STD551025
#65

Top half diagram

Washer

Part #STD551025

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

Most common symptoms to help you fix your riding mowers & tractors

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

View all

Why won't my riding mower cut grass?

Main causes: worn or broken blade belt, broken belt idler pulley, blade clutch cable failure, bad PTO switch, damaged ma…

Read more

How do I charge a dead battery on my riding mower?

Main causes: faulty battery, bad alternator…

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How do I fix a flat tire on my riding mower?

Main causes: punctured tire or inner tube, leaky valve stem, damaged wheel rim…

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Why won't my riding mower start?

Main causes: dead battery, stale fuel, bad starter solenoid, ignition system problem, bad ignition interlock switch, clo…

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Why is the steering loose on my riding mower?

Main causes: damaged tie rods, bent or worn wheel spindle, worn front axle, damaged sector gear assembly…

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Why does my riding mower creep in neutral?

Main causes: shift lever needs adjustment, neutral control needs adjustment…

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Why does my riding mower run rough or misfire?

Main causes: clogged carburetor, damaged flywheel key, dirty spark plug, stale fuel, improper valve lash, engine needs a…

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Why won't my riding mower move?

Main causes: worn or broken ground drive belt, bad seat switch, transaxle freewheel control engaged, transaxle failure, …

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Why is my riding mower not cutting evenly?

Main causes: unlevel mower deck, dull or damaged cutting blades, worn mandrel pulleys, bent mower deck, engine needs tun…

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Most common repair guides to help fix your riding mowers & tractors

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

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How to replace a riding lawn mower rear tire

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.…

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

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.…

Read more
Repair difficulty
Time required
 30 minutes or less
How to replace a riding lawn mower fuel filter

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.…

Read more
Repair difficulty
Time required
 15 minutes or less

Effective articles & videos to help repair your 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.

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How to enjoy all the online benefits we offer on our Sears PartsDirect website

How to enjoy all the online benefits we offer on our Sears PartsDirect website

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…

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Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect.…

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Riding lawn mower engine clicks but doesn't turn over video

Riding lawn mower engine clicks but doesn't turn over video

Check the starter solenoid, starter motor, wiring, battery and engine.…

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