Model # 545451661 Official Sears 20" bmx bicycle

Here are the diagrams and repair parts for Official Sears 545451661 20" bmx 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

ALL PARTS

Showing 10 of 48 parts |

#21

Unit parts diagram

Kent chain w/link

Part #072007

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

#20

Unit parts diagram

Lifestyler ft sprkt 44t

Part #068002

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

#24

Unit parts diagram

Pr sprocket

Part #106002

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

#41

Unit parts diagram

Western auto rr refl brkt

Part #082010

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

#35

Unit parts diagram

Ming ta bicycle brake shoe set

Part #104002

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

#14

Unit parts diagram

Axle brg set

Part #053004

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

#NI

All parts diagram

Owner's manual

Part #102053

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

Unit parts diagram

Front wheel assembly

Part #045010

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

#18

Unit parts diagram

Pedal

Part #070003

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

#NI

All parts diagram

Tool

Part #103007

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

Symptoms for electric cooktops

Why doesn't my electric cooktop's surface element heat?

Main causes: broken surface element, surface element switch failure, control system problem, surface element limiter swi…

How to replace a coil surface element on an electric cooktop

Easily replace a coil surface element in 15 minutes or less by following these step-by-step instructions.…

Repair difficulty

Time required

15 minutes or less

How to replace the glass top on an electric cooktop

Don't use a cracked or damage glass cooktop—replace it, using these instructions to guide you.…

Repair difficulty

Time required

30 minutes or less

How to replace a radiant element on an electric cooktop

Follow these step-by-step instructions to replace a damaged radiant element on your electric cooktop when the element wo…

Repair difficulty

Time required

45 minutes or less

Articles and videos for electric cooktops

How is cooking on an electric range different than cooking on a gas stove?

Model # 545451661 Official Sears 20" bmx bicycle

Model diagram and schematic

SEARCH WITHIN THIS MODEL

Symptoms for electric cooktops

Why doesn't my electric cooktop's surface element heat?

Repair guides for electric cooktops

How to replace a coil surface element on an electric cooktop

How to replace the glass top on an electric cooktop

How to replace a radiant element on an electric cooktop

Articles and videos for electric cooktops

How is cooking on an electric range different than cooking on a gas stove?

5 Holiday Cleaning Tasks Essential to Boosting Your Home’s Image

How to enjoy all the online benefits we offer on our Sears PartsDirect website

Parts & More

Stay Connected

Quick links

Let us help you

More resources