Treadmill

Model # T4 Official Horizon treadmill

Here are the diagrams and repair parts for Official Horizon T4 treadmill, as well as links to manuals and error code tables, if available.

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T4 Fitness & Exercise
Nut MZE0204005
Nut

Part #MZE0204005

Replaced by #004926-00

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Manufacturer substitution
This part replaces MZE0204005. Substitute parts can look different from the original.
This item is not returnable
In Stock
T-wrench MZE1002003
#KIT

Treadmill diagram

T-wrench

Part #MZE1002003

Replaced by #005393-00

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Manufacturer substitution
This part replaces MZE1002003. Substitute parts can look different from the original.
In Stock
Rubber Pad MB0607001B
#M07

Treadmill diagram

Rubber pad

Part #MB0607001B

Replaced by #056374-AA

?
Manufacturer substitution
This part replaces MB0607001B. Substitute parts can look different from the original.
This item is not returnable
In Stock
Screw ME0102042
#P17

Treadmill diagram

Screw

Part #ME0102042

Replaced by #004381-00

?
Manufacturer substitution
This part replaces ME0102042. Substitute parts can look different from the original.
This item is not returnable
In Stock
Drive Belt MD0602003
#R03

Treadmill diagram

Drive belt

Part #MD0602003

Replaced by #004158-00

?
Manufacturer substitution
This part replaces MD0602003. Substitute parts can look different from the original.
In Stock
Screw ME0104085
#R09

Treadmill diagram

Screw

Part #ME0104085

Replaced by #004488-00

?
Manufacturer substitution
This part replaces ME0104085. Substitute parts can look different from the original.
This item is not returnable
In Stock
Spd Sensor SSED080434DA
#KIT

Treadmill diagram

Spd sensor

Part #SSED080434DA

Replaced by #060295-DA

?
Manufacturer substitution
This part replaces SSED080434DA. Substitute parts can look different from the original.
In Stock
Screw MZE0103001
#P13

Treadmill diagram

Screw

Part #MZE0103001

Replaced by #004415-Z

?
Manufacturer substitution
This part replaces MZE0103001. Substitute parts can look different from the original.
This item is not returnable
In Stock
Screw MZE0107023
#B39

Treadmill diagram

Screw

Part #MZE0107023

Replaced by #004620-00

?
Manufacturer substitution
This part replaces MZE0107023. Substitute parts can look different from the original.
This item is not returnable
In Stock
Nylon Nut ME0204025
#H20

Treadmill diagram

Nylon nut

Part #ME0204025

Replaced by #004941-00

?
Manufacturer substitution
This part replaces ME0204025. Substitute parts can look different from the original.
This item is not returnable
In Stock

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

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.

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.…