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Horizon
Treadmill

Model # PARAGON Official Horizon treadmill

Here are the diagrams and repair parts for Official Horizon PARAGON 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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Model diagram and schematic

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ALL PARTS
Showing 10 of 156 parts  |
Nut MZE0204005
Nut

Part #MZE0204005

Replaced by #004926-00

?
Manufacturer substitution
This part replaces MZE0204005. Substitute parts can look different from the original.
This item is not returnable
$2.16
In Stock
Breaker MC0702011
#P04

Treadmill assembly diagram

Breaker

Part #MC0702011

Replaced by #003346-00

?
Manufacturer substitution
This part replaces MC0702011. Substitute parts can look different from the original.
$14.80
In Stock
Bolt ME0104098
#R04

Treadmill assembly diagram

Bolt

Part #ME0104098

Replaced by #004496-00

?
Manufacturer substitution
This part replaces ME0104098. Substitute parts can look different from the original.
This item is not returnable
$5.57
In Stock
Washer MZE0505033
#B65

Treadmill assembly diagram

Washer

Part #MZE0505033

Replaced by #005196-00

?
Manufacturer substitution
This part replaces MZE0505033. Substitute parts can look different from the original.
This item is not returnable
$2.26
In Stock
Sensor MC0510031D
#P14

Treadmill assembly diagram

Sensor

Part #MC0510031D

Replaced by #002248-D

?
Manufacturer substitution
This part replaces MC0510031D. Substitute parts can look different from the original.
$8.16
In Stock
Runng Belt MD0610008F
#R02

Treadmill assembly diagram

Runng belt

Part #MD0610008F

Replaced by #004216-H

?
Manufacturer substitution
This part replaces MD0610008F. Substitute parts can look different from the original.
$209.63
In Stock
Sleeve MJ3021002A
#C16

Treadmill assembly diagram

Sleeve

Part #MJ3021002A

Replaced by #008622-B

?
Manufacturer substitution
This part replaces MJ3021002A. Substitute parts can look different from the original.
This item is not returnable
$3.05
In Stock
Bolt ME0112117
#C10

Treadmill assembly diagram

Bolt

Part #ME0112117

Replaced by #004774-00

?
Manufacturer substitution
This part replaces ME0112117. Substitute parts can look different from the original.
This item is not returnable
$2.16
In Stock
Screw MZE0107023
Screw

Part #MZE0107023

Replaced by #004620-00

?
Manufacturer substitution
This part replaces MZE0107023. Substitute parts can look different from the original.
This item is not returnable
$2.16
In Stock
Nut MZE0204004
Nut

Part #MZE0204004

Replaced by #004925-00

?
Manufacturer substitution
This part replaces MZE0204004. Substitute parts can look different from the original.
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 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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