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Horizon
Treadmill

Model # PST PRO Official Horizon treadmill

Here are the diagrams and repair parts for Official Horizon PST-PRO 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.

Model diagram and schematic

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ALL PARTS
Showing 10 of 122 parts  |
Switch MC0701002
#P07

Treadmill diagram

Switch

Part #MC0701002

Replaced by #003326-00

?
Manufacturer substitution
This part replaces MC0701002. Substitute parts can look different from the original.
$27.79 | 
18% OFF Phone Price : $33.79
In Stock
Screw ME0102042
#P17

Treadmill diagram

Screw

Part #ME0102042

Replaced by #004381-00

?
Manufacturer substitution
This part replaces ME0102042. Substitute parts can look different from the original.
This item is not returnable
$2.16
In Stock
Screw ME0104085
#R09

Treadmill diagram

Screw

Part #ME0104085

Replaced by #004488-00

?
Manufacturer substitution
This part replaces ME0104085. Substitute parts can look different from the original.
This item is not returnable
$2.16
In Stock
Drive Belt MD0602003
#R03

Treadmill diagram

Drive belt

Part #MD0602003

Replaced by #004158-00

?
Manufacturer substitution
This part replaces MD0602003. Substitute parts can look different from the original.
$58.57
In Stock
Screw MZE0107023
#B39

Treadmill diagram

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
Core MC0704005
#M17

Treadmill diagram

Core

Part #MC0704005

Replaced by #003386-A

?
Manufacturer substitution
This part replaces MC0704005. Substitute parts can look different from the original.
$12.13
In Stock
Grip Pulse MC0712063A
#N32

Treadmill diagram

Grip pulse

Part #MC0712063A

Replaced by #039042-A

?
Manufacturer substitution
This part replaces MC0712063A. Substitute parts can look different from the original.
$10.82
In Stock
Screw MZE0103001
#P13

Treadmill diagram

Screw

Part #MZE0103001

Replaced by #004415-Z

?
Manufacturer substitution
This part replaces MZE0103001. Substitute parts can look different from the original.
This item is not returnable
$2.16
In Stock
Rear Roller SM0908015A
#AR2

Treadmill diagram

Rear roller

Part #SM0908015A

Replaced by #014682-B

?
Manufacturer substitution
This part replaces SM0908015A. Substitute parts can look different from the original.
$119.99
In Stock
Rail Lock MB0643001
#B141

Treadmill diagram

Rail lock

Part #MB0643001

Replaced by #001251-F

?
Manufacturer substitution
This part replaces MB0643001. Substitute parts can look different from the original.
This item is not returnable
$3.92
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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