Horizon
Treadmill

Model #T52 Horizon treadmill

Here are the repair parts and diagrams for your Horizon T52 treadmill. 

The diagram(s) below can help you find the right part.  If you’d like help, we invite you to call our customer service number at the top of the page, or click chat.

On this page, you can also find any manuals, installation guides and error code tables associated with this model.

For advice on diagnosing problems with appliances, lawn & garden equipment and other products, check out the videos, repair guides and articles in our DIY section.

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Showing 10 of 121 parts

Exercise Equipment Washer

#H20

Horizon treadmill Diagram

Exercise equipment washer

Part #005035-00
?This is a manufacturer substitution. Part may differ in appearance but is a functional equivalent to prior parts including  MZE0502014
This part replaces MZE0502014
This item is not returnable

$2.16

In Stock

Frame

#AH1

Horizon treadmill Diagram

Frame

Part #014949-BA
?This is a manufacturer substitution. Part may differ in appearance but is a functional equivalent to prior parts including  SP0017009BA
This part replaces SP0017009BA

$77.91

In Stock

Treadmill Power Cable

#P09

Horizon treadmill Diagram

Treadmill power cable

Part #002513-B
?This is a manufacturer substitution. Part may differ in appearance but is a functional equivalent to prior parts including  MC0525033B
This part replaces MC0525033B
This item is not returnable

$2.16

In Stock

Decal

#V03

Horizon treadmill Diagram

Decal

Part #006089-A
?This is a manufacturer substitution. Part may differ in appearance but is a functional equivalent to prior parts including  MG0209008A
This part replaces MG0209008A
This item is not returnable

$2.32

In Stock

Exercise Equipment Screw

#L11

Horizon treadmill Diagram

Exercise equipment screw

Part #004425-B
?This is a manufacturer substitution. Part may differ in appearance but is a functional equivalent to prior parts including  MZE0103014
This part replaces MZE0103014
This item is not returnable

$2.16

In Stock

Exercise Equipment Nut

#L08

Horizon treadmill Diagram

Exercise equipment nut

Part #004941-00
?This is a manufacturer substitution. Part may differ in appearance but is a functional equivalent to prior parts including  ME0204025
This part replaces ME0204025
This item is not returnable

$2.16

In Stock

Rubber Pad

#M07

Horizon treadmill Diagram

Rubber pad

Part #056374-AA
?This is a manufacturer substitution. Part may differ in appearance but is a functional equivalent to prior parts including  MB0607001B
This part replaces MB0607001B
This item is not returnable

$5.66

In Stock

Treadmill Screw

#M45

Horizon treadmill Diagram

Treadmill screw

Part #004480-Z
?This is a manufacturer substitution. Part may differ in appearance but is a functional equivalent to prior parts including  MZE0104073
This part replaces MZE0104073
This item is not returnable

$2.16

In Stock

Exercise Equipment Screw

#R04

Horizon treadmill Diagram

Exercise equipment screw

Part #004486-00
?This is a manufacturer substitution. Part may differ in appearance but is a functional equivalent to prior parts including  MZE0104203
This part replaces MZE0104203
This item is not returnable

$3.07

In Stock

Consl Case

#N01

Horizon treadmill Diagram

Consl case

Part #001055-DA
?This is a manufacturer substitution. Part may differ in appearance but is a functional equivalent to prior parts including  MB0617074BA
This part replaces MB0617074BA

$50.21

In Stock

Symptoms for treadmills

Choose a symptom to see related treadmill repairs.

Main causes: damaged walking belt, improper belt tension, lack of belt lubricant, bad drive motor
Main causes: faulty sensors, wiring failure, bad control console
Main causes: missing safety key, bad control console, wiring failure, faulty motor control board, bad drive motor
Main causes: rear roller out of alignment, damaged walking belt, bad roller
Main causes: no power, bad power cord, tripped or faulty overload switch, bad power switch, wiring failure, bad motor control board
Main causes: bad control console, wiring failure, bad motor control board
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.

June 1, 2015
By Lyle Weischwill
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't run.

Repair difficulty
Time required
 15 minutes or less
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 these steps.

Repair difficulty
Time required
 45 minutes or less
June 1, 2015
By Lyle Weischwill
How to replace a treadmill walking board

A worn-out walking board creates friction with the walking belt and causes the belt to slow down during use. Replace the walking board if it's worn or damaged.

Repair difficulty
Time required
 30 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.

January 18, 2016

How to use a multimeter to test electrical parts video

By Sears PartsDirect staff

Learn how to use a multimeter to check for wiring problems in an appliance that's not working

June 29, 2015

Easy DIY treadmill repairs

By Sears PartsDirect staff

Learn about treadmill repairs that you can easily do yourself.

June 1, 2015

Treadmill common questions

By Sears PartsDirect staff

These answers to common questions can help you make the most of your treadmill.