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Model # 502256020 Official Craftsman 25" riding lawn mower
Here are the diagrams and repair parts for Official Craftsman 502256020 25" riding lawn mower, as well as links to manuals and error code tables, if available.
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502256020 Riding Mowers & Tractors
#23
3-speed transmission diagram
Holder
Part #790005
Replaced by #790025
?
Manufacturer substitution
This part replaces 790005. Substitute parts can look different from the original.
This item is not returnable
$18.85 |
7% OFF Phone Price : $20.30
In Stock
#26
3-speed transmission diagram
Pin
Part #786026
Replaced by #786026B
?
Manufacturer substitution
This part replaces 786026. Substitute parts can look different from the original.
This item is not returnable
$4.60 |
18% OFF Phone Price : $5.60
In Stock
#40
3-speed transmission diagram
Ball
Part #792077
Replaced by #792077A
?
Manufacturer substitution
This part replaces 792077. Substitute parts can look different from the original.
This item is not returnable
$3.40 |
23% OFF Phone Price : $4.40
In Stock
Bolt
Part #STD533107
The manufacturer no longer makes this part, and there's no substitute part
#29
3-speed transmission diagram
Race
Part #780072
Replaced by #780072
?
Manufacturer substitution
This part replaces 780072. Substitute parts can look different from the original.
This item is not returnable
$3.40 |
23% OFF Phone Price : $4.40
In Stock
#19
3-speed transmission diagram
Gear
Part #778113
Replaced by #778113A
?
Manufacturer substitution
This part replaces 778113. Substitute parts can look different from the original.
$28.64 |
17% OFF Phone Price : $34.64
In Stock
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
#21
3-speed transmission diagram
Brake disc
Part #790003
Replaced by #790003
?
Manufacturer substitution
This part replaces 790003. Substitute parts can look different from the original.
This item is not returnable
$21.87 |
22% OFF Phone Price : $27.87
In Stock
#18
3-speed transmission diagram
Shaft
Part #776135
Replaced by #776135
?
Manufacturer substitution
This part replaces 776135. Substitute parts can look different from the original.
$33.59 |
15% OFF Phone Price : $39.59
In Stock
#41
3-speed transmission diagram
Screw
Part #792078
Replaced by #792078
?
Manufacturer substitution
This part replaces 792078. Substitute parts can look different from the original.
This item is not returnable
$4.37
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.
Main causes: unlevel mower deck, dull or damaged cutting blades, worn mandrel pulleys, bent mower deck, engine needs tun…
Main causes: dead battery, stale fuel, bad starter solenoid, ignition system problem, bad ignition interlock switch, clo…
Main causes: damaged tie rods, bent or worn wheel spindle, worn front axle, damaged sector gear assembly…
Main causes: punctured tire or inner tube, leaky valve stem, damaged wheel rim…
Main causes: worn or broken blade belt, broken belt idler pulley, blade clutch cable failure, bad PTO switch, damaged ma…
Main causes: faulty battery, bad alternator…
Main causes: damaged cutting blade, worn deck pulley, damaged mandrel pulley, loose fasteners on mower deck components…
Main causes: shift lever needs adjustment, neutral control needs adjustment…
Main causes: worn or broken ground drive belt, bad seat switch, transaxle freewheel control engaged, transaxle failure, …
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.

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 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

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
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.

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

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

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