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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 Motor Control Board (replaces 016171-z, Sjed08092gf) 032671-HF
#M03

Frame assy diagram

Treadmill motor control board (replaces 016171-z, sjed08092gf)

Part #032671-HF

This item is not returnable
$305.35 | 
$12.00 OFF Phone Price : $317.35
In Stock
Treadmill On/off Switch 003326-00
#P02

Frame assy diagram

Treadmill on/off switch

Part #003326-00

$27.79 | 
18% OFF Phone Price : $33.79
In Stock
Treadmill Speed Sensor 060295-CA
#M15

Frame assy diagram

Treadmill speed sensor

Part #060295-CA

$26.79 | 
18% OFF Phone Price : $32.79
In Stock
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
Drive Motor 016154-Z
#M01

Belt assy diagram

Drive motor

Part #016154-Z

Replaced by #1000111822

?
Manufacturer substitution
This part replaces 016154-Z. Substitute parts can look different from the original.
$300.86 | 
$12.00 OFF Phone Price : $312.86
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
Horizon Treadmill Lift Assist Shock Absorber 009562-AX
#B56

Frame assy diagram

Horizon treadmill lift assist shock absorber

Part #009562-AX

$30.79 | 
16% OFF Phone Price : $36.79
In Stock
End Cap 000906-B
#G36A

Console assy diagram

End cap

Part #000906-B

This item is not returnable
$2.16
In Stock
Handlebar End Cap 000920-00
#G36

Console assy diagram

Handlebar end cap

Part #000920-00

This item is not returnable
$2.80
In Stock
Horizon Hardware 079400
#NI

Frame assy diagram

Horizon hardware

Part #079400

$25.73
In Stock

Symptoms for treadmills

Choose a symptom to see related treadmill repairs.

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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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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 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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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…

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace a treadmill walking belt

How to replace a treadmill walking belt

A worn walking belt will begin to slow down during use. If your treadmill walking belt is worn out, replace it using the…

Read more
Repair difficulty
Time required
 45 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'…

Read more
Repair difficulty
Time required
 15 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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