Sears
Cycling

Model # 502456921 Official Sears 26" men's 15-speed atb bicycle

Here are the diagrams and repair parts for Official Sears 502456921 26" men's 15-speed atb bicycle, 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 57 parts  |

Wrench 6mm 300809

#NI

All parts diagram

Wrench 6mm

Part #300809

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

Washer 17X47Z
#5

Unit parts diagram

Washer

Part #17X47Z

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

Inner Tube 139X3
#15B

Unit parts diagram

Inner tube

Part #139X3

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

Derailleur 40248
#34

Unit parts diagram

Derailleur

Part #40248

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

Cable Casing 308525
#32A

Unit parts diagram

Cable casing

Part #308525

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

Tire 75X677PA
#15A

Unit parts diagram

Tire

Part #75X677PA

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

Sprocket Assembly 41750E701
#22

Unit parts diagram

Sprocket assembly

Part #41750E701

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

Sprocket 40903
#24

Unit parts diagram

Sprocket

Part #40903

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

Reflector Kt 36056
#8

Unit parts diagram

Reflector kt

Part #36056

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

Bracket 40298Z
#7

Unit parts diagram

Bracket

Part #40298Z

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

Symptoms for gas walk-behind mowers

Choose a symptom to see related walk-behind mower repairs.

Main causes: dirty carburetor, bad spark plug, clogged air filter, engine choke problems, clogged gas cap vent…

Main causes: drive control cable failure, worn or broken drive belt, bad transmission, broken drive wheel…

Main causes: stale gas, engine needs tune up, bad spark plug, dead battery, bad recoil starter, faulty safety switch, ba…

Main causes: engine needs tune up, dirty or clogged carburetor, damaged flywheel key…

Main causes: uneven wheel height settings, damaged wheel, dull or damaged cutting blade…

Main causes: damaged cutting blade, loose cutting blade, damaged flywheel key, engine needs tune up…

Repair guides for gas walk-behind mowers

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

How to replace a lawn mower transmission

How to replace a lawn mower transmission

Learn how to replace the transmission on your lawn mower if it's locked up or won't drive the wheels.…

Repair difficulty
Time required
 60 minutes or less
How to rebuild a lawn mower carburetor

How to rebuild a lawn mower carburetor

The carburetor mixes air with fuel to drive the piston. Rebuild the carburetor if it's clogged or leaks.…

Repair difficulty
Time required
 60 minutes or less
How to replace a lawn mower ignition coil on a flathead engine

How to replace a lawn mower ignition coil on a flathead engine

If the spark plug doesn't fire when you try to start the mower, you could have a defective ignition coil. Follow these s…

Repair difficulty
Time required
 30 minutes or less

Articles and videos for gas walk-behind mowers

Use the advice and tips in these articles and videos to get the most out of your walk-behind lawn mower.

Tapping into a new feature in the Search Bar on Sears PartsDirect

Tapping into a new feature in the Search Bar on Sears PartsDirect

Learn about a new feature added to the Search Bar on Sears PartsDirect…

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…

Lawn mower won't start troubleshooting video: spark plug and ignition problems video

Lawn mower won't start troubleshooting video: spark plug and ignition problems video

Find out how to test and fix problems with the spark plug, stop wire, ignition coil and flywheel.…