Sears
Cycling

Model # 502457530 Official Sears 20" bmx bicycle

Here are the diagrams and repair parts for Official Sears 502457530 20" bmx 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 73 parts  |

R Wheel Assy 303013C
#20

Unit parts diagram

R wheel assy

Part #303013C

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

Sprocket 300424
#22A

Shimano rear hub diagram

Sprocket

Part #300424

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

Spk 7-9/16 303155
Spk 7-9/16

Part #303155

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

Axle Mx 303520
#11

Unit parts diagram

Axle mx

Part #303520

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

F Wheel 303005C
#9

Unit parts diagram

F wheel

Part #303005C

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

Cap 300517
#10

Rear derailleur diagram

Cap

Part #300517

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

Seat Post 32942Z
#23

Unit parts diagram

Seat post

Part #32942Z

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

Pedal Set 35068
#16

Unit parts diagram

Pedal set

Part #35068

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

606 Fp/decal 64X865

#NI

All parts diagram

606 fp/decal

Part #64X865

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

Arm Nut 300460
#2

Shimano rear hub diagram

Arm nut

Part #300460

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

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

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

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

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 spark plug

How to replace a lawn mower spark plug

Take a few minutes to replace the spark plug during your lawn mower's annual tune-up or if the spark plug is burnt or cr…

Repair difficulty
Time required
 15 minutes or less
How to replace a lawn mower drive cable

How to replace a lawn mower drive cable

The drive cable engages the transmission to spin the drive wheels and move the mower across the grass. Replace the drive…

Repair difficulty
Time required
 60 minutes or less
How to replace a lawn mower starter rope

How to replace a lawn mower starter rope

These step-by-step instructions show how to replace a broken starter pull rope on a walk-behind lawn mower.…

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.

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.…

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.…

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.…