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Weslo
Treadmill

Model # WL420021 Official Weslo cadence 4200 treadmill

Here are the diagrams and repair parts for Official Weslo WL420021 cadence 4200 treadmill, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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ALL PARTS
Showing 10 of 97 parts  |
Treadmill Circuit Breaker, 15-amp (replaces 031103, 127202, 173322) 109382
#36

Unit parts diagram

Treadmill circuit breaker, 15-amp (replaces 031103, 127202, 173322)

Part #109382

This item is not returnable
$9.39 | 
10% OFF Phone Price : $10.39
In Stock
Image Treadmill Safety Key Assembly 106337
#8

Unit parts diagram

Image treadmill safety key assembly

Part #106337

This item is not returnable
$6.59 | 
13% OFF Phone Price : $7.59
In Stock
Choke,5.5mh 031238
#12

Unit parts diagram

Choke,5.5mh

Part #031238

Replaced by #130993

?
Manufacturer substitution
This part replaces 031238. Substitute parts can look different from the original.
$34.19 | 
15% OFF Phone Price : $40.19
In Stock
Mag,rnd,for 033066
#80

Unit parts diagram

Mag,rnd,for

Part #033066

Replaced by #113842

?
Manufacturer substitution
This part replaces 033066. Substitute parts can look different from the original.
This item is not returnable
$2.16
Back Order
Nut,hex Nyl 012082
#25

Unit parts diagram

Nut,hex nyl

Part #012082

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

Exercise Equipment Nut 012179
#49

Unit parts diagram

Exercise equipment nut

Part #012179

This item is not returnable
$2.16
In Stock
Exercise Equipment Screw 108080
#3

Unit parts diagram

Exercise equipment screw

Part #108080

This item is not returnable
$2.16
In Stock
Cotter Pin,3 106334
#83

Unit parts diagram

Cotter pin,3

Part #106334

This item is not returnable
$2.16
In Stock
Screw,hhcs,n 104624
#50

Unit parts diagram

Screw,hhcs,n

Part #104624

This item is not returnable
$2.16
In Stock
Screw,tekslo 109250
#68

Unit parts diagram

Screw,tekslo

Part #109250

This item is not returnable
$2.16
In Stock

Symptoms for treadmills

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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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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 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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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…

Read more
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…

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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'…

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Repair difficulty
Time required
 15 minutes or less

Effective articles & videos to help repair your fitness & exercise

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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