Sears
Cycling

Model # 502451620 Official Sears 20" bmx bicycle

Here are the diagrams and repair parts for Official Sears 502451620 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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ALL PARTS
Showing 10 of 52 parts  |

F Axle Set 303518
#12

Unit parts diagram

F axle set

Part #303518

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

Kickstand 302336
#14

Unit parts diagram

Kickstand

Part #302336

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

R Wheel Assy 303013C
#22

Unit parts diagram

R wheel assy

Part #303013C

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

Sprocket 34998
#22

Shimano rear hub diagram

Sprocket

Part #34998

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

F Wheel 303005C
#10

Unit parts diagram

F wheel

Part #303005C

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

Hub Cone 300403
#19

Shimano rear hub diagram

Hub cone

Part #300403

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

Retainer 300020
#15

Shimano rear hub diagram

Retainer

Part #300020

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

Wheel Retain 32375Z
#13

Unit parts diagram

Wheel retain

Part #32375Z

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

Pad Set 39530

#NI

All parts diagram

Pad set

Part #39530

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

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Repair guides for gas line trimmers

These step-by-step repair guides will help you safely fix what’s broken on your grass line trimmer.

How to rebuild a line trimmer carburetor

How to rebuild a line trimmer carburetor

If the line trimmer engine won't start even though there's fuel in the tank, the carburetor could be the problem. Follow…

Repair difficulty
Time required
 15 minutes or less
How to replace a line trimmer carburetor

How to replace a line trimmer carburetor

If the line trimmer won't start even though there's fuel in the tank, the carburetor could be the problem. Follow these …

Repair difficulty
Time required
 15 minutes or less
How to replace a line trimmer fuel line

How to replace a line trimmer fuel line

The fuel line on a grass line trimmer deteriorates with time and eventually can split or crack. You can replace it yours…

Repair difficulty
Time required
 15 minutes or less

Articles and videos for gas line trimmers

Use the advice and tips in these articles and videos to get the most out of your grass line trimmer.

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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Solving 3 common problems with line trimmer cutting lines

Follow these tips to prevent the cutting line on your grass line trimmer from breaking or feeding out too much or too li…

How to replace a line trimmer fuel line video

How to replace a line trimmer fuel line video

Follow the steps in this video to replace a leaking fuel line in a line trimmer.…