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Horizon
Treadmill

Model # T71 Official Horizon treadmill

Here are the diagrams and repair parts for Official Horizon T71 treadmill, as well as links to manuals and error code tables, if available.

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Owner’s manual

Model diagram and schematic

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Showing 10 of 78 parts  |
T-wrench MZE1002003
#KIT

Treadmill diagram

T-wrench

Part #MZE1002003

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

Rail Lock MB0643001
#L10

Treadmill diagram

Rail lock

Part #MB0643001

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

Nut MZE0201038
#R10

Treadmill diagram

Nut

Part #MZE0201038

Replaced by #004903-Z

?
Manufacturer substitution
This part replaces MZE0201038. Substitute parts can look different from the original.
This item is not returnable
$2.16
In Stock
Wheel MB0103040CA
Wheel

Part #MB0103040CA

Replaced by #000037-CA

?
Manufacturer substitution
This part replaces MB0103040CA. Substitute parts can look different from the original.
This item is not returnable
$2.26
In Stock
Spd Sensor SSED080434CA
#M48

Treadmill diagram

Spd sensor

Part #SSED080434CA

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

Consl Case MB0617074BA
#N01

Treadmill diagram

Consl case

Part #MB0617074BA

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

Wire Harness MC0501136A
#P06

Treadmill diagram

Wire harness

Part #MC0501136A

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

Washer MZE0502186A
#H25

Treadmill diagram

Washer

Part #MZE0502186A

Replaced by #005141-A

?
Manufacturer substitution
This part replaces MZE0502186A. Substitute parts can look different from the original.
This item is not returnable
$2.16
In Stock
Screw,15mm ME0103014B
#L11

Treadmill diagram

Screw,15mm

Part #ME0103014B

Replaced by #004425-B

?
Manufacturer substitution
This part replaces ME0103014B. Substitute parts can look different from the original.
This item is not returnable
$2.49 | 
29% OFF Phone Price : $3.49
In Stock
Screw ME0106026B
#M10

Treadmill diagram

Screw

Part #ME0106026B

Replaced by #004595-00

?
Manufacturer substitution
This part replaces ME0106026B. Substitute parts can look different from the original.
This item is not returnable
$2.40
In Stock

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…

Read more
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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