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Sears
Cycling

Model # 502471252 Official Sears 27" lightweight bicycle

Here are the diagrams and repair parts for Official Sears 502471252 27" lightweight 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 129 parts  |
R Derailleur 302705
R derailleur

Part #302705

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

Brake Shoe 308697
#12

Caliper brake diagram

Brake shoe

Part #308697

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

Mount Plate 302763
#14

Excel rear derailleur diagram

Mount plate

Part #302763

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

Rh Lvr Only 304250

#NI

All parts diagram

Rh lvr only

Part #304250

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

Washer Screw 302738
#1

Excel front derailleur diagram

Washer screw

Part #302738

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

Bell Crank 302743
#6

Excel front derailleur diagram

Bell crank

Part #302743

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

Hanger Set 303333
#14

Unit parts diagram

Hanger set

Part #303333

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

Spk 12-1/32 303171
Spk 12-1/32

Part #303171

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

Housing Assembly 302759
#10

Excel rear derailleur diagram

Housing assembly

Part #302759

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

Screw 302751
#2

Excel rear derailleur diagram

Screw

Part #302751

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…

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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…

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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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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How to maintain a treadmill

How to maintain a treadmill

Keep your treadmill in shape by following these tips.…

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