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Craftsman
Front-Engine Lawn Tractor

Model # 502255640 Official Craftsman 10-hp riding lawn mower

Here are the diagrams and repair parts for Official Craftsman 502255640 10-hp 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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Showing 10 of 278 parts  |
E-ring STD581075
#49

Drive system diagram

E-ring

Part #STD581075

Replaced by #812000029

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Manufacturer substitution
This part replaces STD581075. Substitute parts can look different from the original.
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This item is not returnable
$3.50 | 
22% OFF Phone Price : $4.50
In Stock
Belt 37X50
#1

Mower deck diagram

Belt

Part #37X50

Replaced by #37X57MA

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Manufacturer substitution
This part replaces 37X50. Substitute parts can look different from the original.

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$36.81 | 
14% OFF Phone Price : $42.81
In Stock
Housing 24384
#42

Mower deck diagram

Housing

Part #24384

Replaced by #492574MA

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Manufacturer substitution
This part replaces 24384. Substitute parts can look different from the original.
$68.99 | 
8% OFF Phone Price : $74.99
In Stock
Washer 17X155
#46

Mower deck diagram

Washer

Part #17X155

Replaced by #17X166MA

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Manufacturer substitution
This part replaces 17X155. Substitute parts can look different from the original.
This item is not returnable
$22.49 | 
21% OFF Phone Price : $28.49
In Stock
Washer 17X115
#48

Drive system diagram

Washer

Part #17X115

Replaced by #17X115MA

?
Manufacturer substitution
This part replaces 17X115. Substitute parts can look different from the original.
$12.06
In Stock
Pulley 55452
#2

Mower deck diagram

Pulley

Part #55452

Replaced by #774090MA

?
Manufacturer substitution
This part replaces 55452. Substitute parts can look different from the original.
$85.99 | 
7% OFF Phone Price : $91.99
In Stock
Cotter Pin 30X50
#14

Idler assembly diagram

Cotter pin

Part #30X50

Replaced by #703312

?
Manufacturer substitution
This part replaces 30X50. Substitute parts can look different from the original.
This item is not returnable
$7.14
In Stock
Pin STD624003
Pin

Part #STD624003

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

Nut 15X100
#48

Mower deck diagram

Nut

Part #15X100

Replaced by #15X100MA

?
Manufacturer substitution
This part replaces 15X100. Substitute parts can look different from the original.
This item is not returnable
$5.99 | 
14% OFF Phone Price : $6.99
In Stock
Spring 165X43
#18

Drive system diagram

Spring

Part #165X43

Replaced by #165X43MA

?
Manufacturer substitution
This part replaces 165X43. Substitute parts can look different from the original.
$13.74
In Stock

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

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

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

Read more

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 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 is my riding mower leaking oil or gas?

Main causes: engine overfilled with oil, leaky head gasket or sump gasket, damaged carburetor seals, cracked fuel pump, …

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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 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

Why does my riding mower deck vibrate?

Main causes: damaged cutting blade, worn deck pulley, damaged mandrel pulley, loose fasteners on mower deck components…

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

Main causes: faulty battery, bad alternator…

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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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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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How to remove a lawn mower blade using a removal tool

How to remove a lawn mower blade using a removal tool

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

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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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