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Horizon
Treadmill

Model # T81 Official Horizon treadmill

Here are the diagrams and repair parts for Official Horizon T81 treadmill, as well as links to manuals and error code tables, if available.

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Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

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Owner’s manual

Model diagram and schematic

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ALL PARTS
Showing 10 of 112 parts  |
Treadmill Reed Switch 002248-D
#P14

Frame assy diagram

Treadmill reed switch

Part #002248-D

$8.16
In Stock
Exercise Equipment Washer 005104-00
#M08

Belt assy diagram

Exercise equipment washer

Part #005104-00

This item is not returnable
$2.16
In Stock
Washer 005070-00
#NI

Frame assy diagram

Washer

Part #005070-00

This item is not returnable
$2.16
In Stock
Horizon Side Rail 082072
#Q05

Belt assy diagram

Horizon side rail

Part #082072

$31.16
In Stock
Grip Pulse 056532-A
#N64

Console assy diagram

Grip pulse

Part #056532-A

$13.99
In Stock
Horizon Treadmill Walking Belt 075197
#R02

Belt assy diagram

Horizon treadmill walking belt

Part #075197

$125.49
In Stock
Cover 076093
#N41

Console assy diagram

Cover

Part #076093

This item is not returnable
$6.62
In Stock
Afg Fixing Plate 001952-00
#NI

Frame assy diagram

Afg fixing plate

Part #001952-00

This item is not returnable
$2.16
In Stock
Treadmill Washer 020487-ZA
#H21

Frame assy diagram

Treadmill washer

Part #020487-ZA

This item is not returnable
$2.16
In Stock
Afg Treadmill Bolt 008628-B
#H14

Frame assy diagram

Afg treadmill bolt

Part #008628-B

This item is not returnable
$3.55
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…

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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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