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Horizon
Treadmill

Model # T52 Official Horizon treadmill

Here are the diagrams and repair parts for Official Horizon T52 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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Showing 10 of 40 parts  |
Screw MZE0104203
#R04

Horizon treadmill diagram

Screw

Part #MZE0104203

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

Screw MZE0104073
#M45

Horizon treadmill diagram

Screw

Part #MZE0104073

Replaced by #004480-Z

?
Manufacturer substitution
This part replaces MZE0104073. Substitute parts can look different from the original.
This item is not returnable
$2.16
In Stock
Base Frame SP0001086BA
#AB1

Horizon treadmill diagram

Base frame

Part #SP0001086BA

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

Lock Latch SP0027018BA
#H31

Horizon treadmill diagram

Lock latch

Part #SP0027018BA

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

End Cap For Right Foot Rail Abs (75040 Hue) (1 Pcs) MB0666019BA
#Q08

Horizon treadmill diagram

End cap for right foot rail abs (75040 hue) (1 pcs)

Part #MB0666019BA

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

Console Set SZTM113CNS
#N01A

Horizon treadmill diagram

Console set

Part #SZTM113CNS

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

Spring Washer Sw8 8.2 X 15.4 X 2t (zinc Plating) (2 Pcs) MZE0501016A
#H23

Horizon treadmill diagram

Spring washer sw8 8.2 x 15.4 x 2t (zinc plating) (2 pcs)

Part #MZE0501016A

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

Screw MZE0107010
#B61

Horizon treadmill diagram

Screw

Part #MZE0107010

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

Left Support Tube (t-75# Qb240p) (1 Set) SP0003051BA
#AC1

Horizon treadmill diagram

Left support tube (t-75# qb240p) (1 set)

Part #SP0003051BA

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

Nut MZE0201003
#M44

Horizon treadmill diagram

Nut

Part #MZE0201003

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

Symptoms for treadmills

Choose a symptom to see related treadmill repairs.

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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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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 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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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…

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Repair difficulty
Time required
 15 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
How to replace a treadmill walking board

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…

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Repair difficulty
Time required
 30 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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