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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  |
Treadmill Nut 004926-00
#B60

Frame assy diagram

Treadmill nut

Part #004926-00

This item is not returnable
$2.16
Back Order
Fix Plate 001251-F
#L10

Belt assy diagram

Fix plate

Part #001251-F

This item is not returnable
$3.92
In Stock
Exercise Equipment Washer 005196-00
#H27

Frame assy diagram

Exercise equipment washer

Part #005196-00

This item is not returnable
$2.26
In Stock
Treadmill Bolt 008625-C
#H19

Frame assy diagram

Treadmill bolt

Part #008625-C

This item is not returnable
$2.16
In Stock
Horizon Console 076825
#AC1

Frame assy diagram

Horizon console

Part #076825

$121.34
In Stock
Horizon Chest Strap 003307-00
#NI

Frame assy diagram

Horizon chest strap

Part #003307-00

$61.67
In Stock
Horizon Sticker 079340
#V02

Belt assy diagram

Horizon sticker

Part #079340

This item is not returnable
$3.05
In Stock
Exercise Equipment Nut 004941-00
#H51

Frame assy diagram

Exercise equipment nut

Part #004941-00

This item is not returnable
$2.16
In Stock
Roller Set 014669-B
#AR1

Belt assy diagram

Roller set

Part #014669-B

$107.02
In Stock
Horizon Treadmill Power Cord 019370-A
#P07

Frame assy diagram

Horizon treadmill power cord

Part #019370-A

$53.09 | 
10% OFF Was : $58.99
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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