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Sears
Cycling

Model # 502451633 Official Sears 20" bmx bicycle

Here are the diagrams and repair parts for Official Sears 502451633 20" bmx bicycle, as well as links to manuals and error code tables, if available.

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  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

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Model diagram and schematic

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ALL PARTS
Showing 10 of 45 parts  |
Frt Sprocket 36067C
#19

Unit parts diagram

Frt sprocket

Part #36067C

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

Seat Post 39934Z
#26

Unit parts diagram

Seat post

Part #39934Z

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

F Wheel Asm 32801C
#9

Unit parts diagram

F wheel asm

Part #32801C

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

Spk 7-9/16 303155
#23

Unit parts diagram

Spk 7-9/16

Part #303155

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

Tire 040003

#NI

All parts diagram

Tire

Part #040003

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

Rrwhl Asm 36219C
#22

Unit parts diagram

Rrwhl asm

Part #36219C

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

F Axle Set 303518
#11

Unit parts diagram

F axle set

Part #303518

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

Inner Tube 041003

#NI

All parts diagram

Inner tube

Part #041003

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

Reflector Kt 36056
#28

Unit parts diagram

Reflector kt

Part #36056

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

Handlbr As 39628C
#3

Unit parts diagram

Handlbr as

Part #39628C

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

Symptoms for treadmills

Choose a symptom to see related treadmill repairs.

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Why does my treadmill's walking belt slow down?

Main causes: damaged walking belt, improper belt tension, lack of belt lubricant, bad drive motor…

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Why is my treadmill's walking belt slipping?

Main causes: damaged walking belt, improper belt tension, bad roller bearing…

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Why is my treadmill's walking belt off center?

Main causes: rear roller out of alignment, damaged walking belt, bad roller…

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Why won't my treadmill start even though the console display works?

Main causes: missing safety key, bad control console, wiring failure, faulty motor control board, bad drive motor…

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Why is my treadmill's heart rate sensor not accurate?

Main causes: faulty sensors, wiring failure, bad control console…

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Why does my treadmill have no display?

Main causes: bad control console, wiring failure, bad motor control board…

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Why won't my treadmill power up?

Main causes: no power, bad power cord, tripped or faulty overload switch, bad power switch, wiring failure, bad motor co…

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Repair guides for treadmills

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

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How to replace a treadmill motor controller

How to replace a treadmill motor controller

Your treadmill motor won't run with a defective motor controller. Replace the motor controller if it doesn't operate the…

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace a treadmill drive motor

How to replace a treadmill drive motor

A defective drive motor won't run when activated by the motor controller. Replace the treadmill drive motor if it doesn'…

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace a treadmill walking board

How to replace a treadmill walking board

A worn-out walking board creates friction with the walking belt and causes the belt to slow down during use. Replace the…

Read more
Repair difficulty
Time required
 30 minutes or less

Articles and videos for treadmills

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

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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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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 use a multimeter to test electrical parts video

How to use a multimeter to test electrical parts video

Learn how to use a multimeter to check for wiring problems in an appliance that's not working…

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