Cycling

Model # 512878390 Official Sears 16" sidewalk bicycle

Here are the diagrams and repair parts for Official Sears 512878390 16" sidewalk bicycle, as well as links to manuals and error code tables, if available.

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Browse Parts for
512878390 16" Sidewalk Bicycle
Rr Whl & Tir 38961-275
#35

Replacement parts diagram

Rr whl & tir

Part #38961-275

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

Hndlbr Collr 219-10A
#3

Replacement parts diagram

Hndlbr collr

Part #219-10A

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

Saddle 221-184
#44

Replacement parts diagram

Saddle

Part #221-184

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

Frame 21-28870-721
#19

Replacement parts diagram

Frame

Part #21-28870-721

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

Pedal 241-330
#30

Replacement parts diagram

Pedal

Part #241-330

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

Screw 216-4073A
#41

Replacement parts diagram

Screw

Part #216-4073A

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

Crank Assembly 47-29863-747
#24

Replacement parts diagram

Crank assembly

Part #47-29863-747

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

Post Clamp 219-1015
#43

Replacement parts diagram

Post clamp

Part #219-1015

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

Decal Pkg 219-1868
#47

Replacement parts diagram

Decal pkg

Part #219-1868

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

Streamer 219-796
#66

Replacement parts diagram

Streamer

Part #219-796

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

Symptoms for treadmills

Choose a symptom to see related treadmill repairs.

Main causes: no power, bad power cord, tripped or faulty overload switch, bad power switch, wiring failure, bad motor co…

Main causes: rear roller out of alignment, damaged walking belt, bad roller…

Main causes: missing safety key, bad control console, wiring failure, faulty motor control board, bad drive motor…

Main causes: faulty sensors, wiring failure, bad control console…

Main causes: bad control console, wiring failure, bad motor control board…

Main causes: damaged walking belt, improper belt tension, lack of belt lubricant, bad drive motor…

Main causes: damaged walking belt, improper belt tension, bad roller bearing…

Repair guides for treadmills

These step-by-step repair guides will help you safely fix what’s broken on your treadmill.

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…

Repair difficulty
Time required
 15 minutes or less
How to replace a treadmill walking belt

How to replace a treadmill walking belt

A worn walking belt will begin to slow down during use. If your treadmill walking belt is worn out, replace it using the…

Repair difficulty
Time required
 45 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'…

Repair difficulty
Time required
 15 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.

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.…

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…