Sears
Cycling

Model # 507455870 Official Sears 20" boys' one-speed xrt bicycle

Here are the diagrams and repair parts for Official Sears 507455870 20" boys' one-speed xrt 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 38 parts  |

Tube, 20"x 16221
#8

Unit parts diagram

Tube, 20"x

Part #16221

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

Wrench Alen 2C6456-5

#NI

All parts diagram

Wrench alen

Part #2C6456-5

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

Pedal Pair 3C2073-A01
#24

Unit parts diagram

Pedal pair

Part #3C2073-A01

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

Head Brg Set 05507-B
#3

Unit parts diagram

Head brg set

Part #05507-B

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

Reflectr Kit 3C3664
#18

Unit parts diagram

Reflectr kit

Part #3C3664

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

Label Fk R/l W/design (nsp) 5C4832

#NI

All parts diagram

Label fk r/l w/design (nsp)

Part #5C4832

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

Chain,1/2" 1C6555
#19

Unit parts diagram

Chain,1/2"

Part #1C6555

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

Box 20" Shock Model (nsp) 3C3344

#NI

All parts diagram

Box 20" shock model (nsp)

Part #3C3344

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

Label Sm Freespirit 1st Qual (nsp) 5C3993

#NI

All parts diagram

Label sm freespirit 1st qual (nsp)

Part #5C3993

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

Parts List 1C3827

#NI

All parts diagram

Parts list

Part #1C3827

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

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

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

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

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

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

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 rebuild a lawn mower carburetor

How to rebuild a lawn mower carburetor

The carburetor mixes air with fuel to drive the piston. Rebuild the carburetor if it's clogged or leaks.…

Repair difficulty
Time required
 60 minutes or less
How to replace a lawn mower recoil starter on an OHV engine

How to replace a lawn mower recoil starter on an OHV engine

Replace the recoil starter if it doesn't move when you pull the starter rope.…

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

How to replace a lawn mower wheel

Learn how replace a damaged wheel on a walk-behind lawn mower—it's a quick, easy fix.…

Repair difficulty
Time required
 15 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: can't pull recoil pull cord

Lawn mower won't start troubleshooting video: can't pull recoil pull cord

A blade obstruction, bad recoil starter or locked-up engine can prevent the pull cord on your mower from working. See ho…