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Sears
Cycling

Model # 502472770 Official Sears 20" bicycle

Here are the diagrams and repair parts for Official Sears 502472770 20" 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 58 parts  |
Inner Tube 139X1

#NI

All parts diagram

Inner tube

Part #139X1

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

F Axle Set 303518
#23

Unit parts diagram

F axle set

Part #303518

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

Grip 40339
#9

Unit parts diagram

Grip

Part #40339

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

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

Part #303155

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

F Wheel 303005C
#20

Unit parts diagram

F wheel

Part #303005C

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

Decal 44X216

#NI

All parts diagram

Decal

Part #44X216

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

Decal 44X215

#NI

All parts diagram

Decal

Part #44X215

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

Decal 44X214

#NI

All parts diagram

Decal

Part #44X214

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

Kickstand 303335
#26

Unit parts diagram

Kickstand

Part #303335

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

Symptoms for treadmills

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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 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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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 is my treadmill's walking belt slipping?

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

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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…

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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'…

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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…

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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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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

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

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How to maintain a treadmill

Keep your treadmill in shape by following these tips.…

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