Horizon
Treadmill

Model # ALPINE Official Horizon treadmill

Here are the diagrams and repair parts for Official Horizon ALPINE treadmill, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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Showing 10 of 149 parts  |

Socket MC0703023
#P11

Treadmill diagram

Socket

Part #MC0703023

Replaced by #019749-A

?
Manufacturer substitution
This part replaces MC0703023. Substitute parts can look different from the original.
This item is not returnable
$9.62
9% OFF Phone Price : $10.62
In Stock
Wheel MB0103006B
#L05

Treadmill diagram

Wheel

Part #MB0103006B

Replaced by #000021-B

?
Manufacturer substitution
This part replaces MB0103006B. Substitute parts can look different from the original.
This item is not returnable
In Stock
Bolt ME0104098
#R04

Treadmill 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
In Stock
Switch MC0701002
#P02

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
15% OFF Phone Price : $32.79
In Stock
Ac Cord MC0504054A
#P07

Treadmill diagram

Ac cord

Part #MC0504054A

Replaced by #002169-A

?
Manufacturer substitution
This part replaces MC0504054A. Substitute parts can look different from the original.
$46.34
10% OFF Was : $51.49
In Stock
Sensor MC0510031D
#P14

Treadmill diagram

Sensor

Part #MC0510031D

Replaced by #002248-D

?
Manufacturer substitution
This part replaces MC0510031D. Substitute parts can look different from the original.
In Stock
Elev Motor MC0102008D
#M02

Treadmill diagram

Elev motor

Part #MC0102008D

Replaced by #012797-00

?
Manufacturer substitution
This part replaces MC0102008D. Substitute parts can look different from the original.
In Stock
Shock MJ3011001
#B41

Treadmill diagram

Shock

Part #MJ3011001

Replaced by #008609-00

?
Manufacturer substitution
This part replaces MJ3011001. Substitute parts can look different from the original.
This item is not returnable
In Stock
Lock Ring MB0302002
#K11

Treadmill diagram

Lock ring

Part #MB0302002

Replaced by #000491-B

?
Manufacturer substitution
This part replaces MB0302002. Substitute parts can look different from the original.
This item is not returnable
In Stock
Nut MZE0204013
#M12

Treadmill diagram

Nut

Part #MZE0204013

Replaced by #004934-00

?
Manufacturer substitution
This part replaces MZE0204013. Substitute parts can look different from the original.
This item is not returnable
In Stock

Symptoms for treadmills

Choose a symptom to see related treadmill repairs.

Main causes: no power, bad power cord, tripped or faulty overload switch, bad power switch, wiring failure, bad motor co…

Main causes: rear roller out of alignment, damaged walking belt, bad roller…

Main causes: missing safety key, bad control console, wiring failure, faulty motor control board, bad drive motor…

Main causes: faulty sensors, wiring failure, bad control console…

Main causes: bad control console, wiring failure, bad motor control board…

Main causes: damaged walking belt, improper belt tension, lack of belt lubricant, bad drive motor…

Main causes: damaged walking belt, improper belt tension, bad roller bearing…

Repair guides for treadmills

These step-by-step repair guides will help you safely fix what’s broken on your treadmill.

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…

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…

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'…

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.

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.…