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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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  • In the search box below, enter all or part of the part number or the part’s name.

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

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For DIY troubleshooting advice and repair guides, visit our repair help section.

Owner’s manual

Model diagram and schematic

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ALL PARTS
Showing 10 of 112 parts  |
Treadmill Nut 004926-00
#H26

Frame assy diagram

Treadmill nut

Part #004926-00

This item is not returnable
$2.16
Back Order
Exercise Equipment Washer 005196-00
#H27

Frame assy diagram

Exercise equipment washer

Part #005196-00

This item is not returnable
$2.26
In Stock
Horizon Washer 005117-00
#M38

Belt assy diagram

Horizon washer

Part #005117-00

This item is not returnable
$2.16
In Stock
Horizon Extension 081590
#G01

Console assy diagram

Horizon extension

Part #081590

$30.63
In Stock
Washer 010680-00
#Z08

Frame assy diagram

Washer

Part #010680-00

This item is not returnable
$2.98
In Stock
Afg Washer 066044-A
#Z21

Frame assy diagram

Afg washer

Part #066044-A

This item is not returnable
$2.16
In Stock
Screw 004614-AB
#N59

Console assy diagram

Screw

Part #004614-AB

This item is not returnable
$2.16
In Stock
Grip Pulse 056532-A
#N64

Console assy diagram

Grip pulse

Part #056532-A

$13.99
In Stock
Horizon Conn.tube 079950
#AH4

Frame assy diagram

Horizon conn.tube

Part #079950

$23.81
In Stock
Horizon Sticker 079320
#NI

Frame assy diagram

Horizon sticker

Part #079320

This item is not returnable
$2.53
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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