Sears
Cycling

Model # 502474840 Official Sears 26" lightweight bicycle

Here are the diagrams and repair parts for Official Sears 502474840 26" lightweight bicycle, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • 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”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
Showing 10 of 118 parts  |

R Derailleur 302705

#NI

All parts diagram

R derailleur

Part #302705

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

Axle Mx 303520

#NI

All parts diagram

Axle mx

Part #303520

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

Spk 11-9/32 303157
#9

Unit parts diagram

Spk 11-9/32

Part #303157

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

Clamp Stud 302736
#10

Excel shifter diagram

Clamp stud

Part #302736

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

Screw 302754
#5

Excel rear derailleur diagram

Screw

Part #302754

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

Bolt 302762
#13

Excel rear derailleur diagram

Bolt

Part #302762

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

F Derailleur 302704

#NI

All parts diagram

F derailleur

Part #302704

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

Lever Stop 302730
#3

Excel shifter diagram

Lever stop

Part #302730

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

Cable/casng 308702
#6

Excel shifter diagram

Cable/casng

Part #308702

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

Bolt W/howe 302725
#16

Hydraulic brake unit diagram

Bolt w/howe

Part #302725

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

Symptoms for gas walk-behind mowers

Choose a symptom to see related walk-behind mower repairs.

Main causes: engine needs tune up, dirty or clogged carburetor, damaged flywheel key…

Main causes: uneven wheel height settings, damaged wheel, dull or damaged cutting blade…

Main causes: damaged cutting blade, loose cutting blade, damaged flywheel key, engine needs tune up…

Main causes: stale gas, engine needs tune up, bad spark plug, dead battery, bad recoil starter, faulty safety switch, ba…

Main causes: dirty carburetor, bad spark plug, clogged air filter, engine choke problems, clogged gas cap vent…

Main causes: drive control cable failure, worn or broken drive belt, bad transmission, broken drive wheel…

Repair guides for gas walk-behind mowers

These step-by-step repair guides will help you safely fix what’s broken on your walk-behind lawn mower.

How to replace a lawn mower spark plug

How to replace a lawn mower spark plug

Take a few minutes to replace the spark plug during your lawn mower's annual tune-up or if the spark plug is burnt or cr…

Repair difficulty
Time required
 15 minutes or less
How to replace a lawn mower blade

How to replace a lawn mower blade

Check your lawn mower blade regularly and replaced it if it's bent or damaged. …

Repair difficulty
Time required
 15 minutes or less
How to replace a lawn mower flywheel key on a flathead engine

How to replace a lawn mower flywheel key on a flathead engine

When you hit a hard object with your mower, the flywheel can shear to protect more expensive components. Learn how to re…

Repair difficulty
Time required
 45 minutes or less

Articles and videos for gas walk-behind mowers

Use the advice and tips in these articles and videos to get the most out of your walk-behind lawn mower.

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.…

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.…

Lawn mower won't start troubleshooting video: spark plug and ignition problems video

Lawn mower won't start troubleshooting video: spark plug and ignition problems video

Find out how to test and fix problems with the spark plug, stop wire, ignition coil and flywheel.…