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Sears
Cycling

Model # 505472780 Official Sears 26" 3-speed lightweight bicycle

Here are the diagrams and repair parts for Official Sears 505472780 26" 3-speed lightweight 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 62 parts  |
Trg Cont Asy 24170
Trg cont asy

Part #24170

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

Saddle 1C5093
#2

Unit parts diagram

Saddle

Part #1C5093

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

Wheel Ret 1C5281
#27

Unit parts diagram

Wheel ret

Part #1C5281

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

Dust Cap 125
#6

Shimano 3-speed hub diagram

Dust cap

Part #125

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

Anchor Pin 21895
#6

Arai caliper brake diagram

Anchor pin

Part #21895

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

Lvr Cmp Frnt 21899
#1

Arai caliper brake diagram

Lvr cmp frnt

Part #21899

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

Dust Cap 135
#34

Shimano 3-speed hub diagram

Dust cap

Part #135

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

F Brk/cable 21900
#2

Arai caliper brake diagram

F brk/cable

Part #21900

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

Push Rod 546
#42

Shimano 3-speed hub diagram

Push rod

Part #546

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

Lubricator 101
#8

Shimano 3-speed hub diagram

Lubricator

Part #101

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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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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How to maintain a treadmill

How to maintain a treadmill

Keep your treadmill in shape by following these tips.…

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