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Horizon
Treadmill

Model # T84 Official Horizon treadmill

Here are the diagrams and repair parts for Official Horizon T84 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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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 118 parts  |
Afg Treadmill Walking Board Cushion, Center (blue) 000768-D
#B58

Frame assy diagram

Afg treadmill walking board cushion, center (blue)

Part #000768-D

$13.60
In Stock
Afg Treadmill Walking Board Cushion (orange) 000767-D
#B57

Frame assy diagram

Afg treadmill walking board cushion (orange)

Part #000767-D

$17.69 | 
10% OFF Phone Price : $19.69
In Stock
Drive Belt 004158-00
#R03

Belt assy diagram

Drive belt

Part #004158-00

$58.57
In Stock
Wire Connector 075250
#P10

Frame assy diagram

Wire connector

Part #075250

$12.75
In Stock
Roller Set 014669-B
#AR1

Belt assy diagram

Roller set

Part #014669-B

$107.02
In Stock
Horizon Cover 076628
#N05

Console assy diagram

Horizon cover

Part #076628

This item is not returnable
$5.24
In Stock
Horizon Label 079342
#NI

Frame assy diagram

Horizon label

Part #079342

This item is not returnable
$2.16
In Stock
Nut 004889-00
#P19

Frame assy diagram

Nut

Part #004889-00

This item is not returnable
$2.16
In Stock
Horizon Sticker 079344
#V03

Console assy diagram

Horizon sticker

Part #079344

This item is not returnable
$3.05
In Stock
Sleeve 001552-AC
#G03

Frame assy diagram

Sleeve

Part #001552-AC

This item is not returnable
$2.16
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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