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Horizon
Treadmill

Model # 24616-RST5.6 Official Horizon treadmill

Here are the diagrams and repair parts for Official Horizon 24616-RST56 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 124 parts  |
Nut MZE0204005
#B72

Treadmill diagram

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
Nut ME0204008AB
#D10

Treadmill diagram

Nut

Part #ME0204008AB

Replaced by #004926-00

?
Manufacturer substitution
This part replaces ME0204008AB. Substitute parts can look different from the original.
This item is not returnable
$2.16
In Stock
Breaker MC0702011
#P02

Treadmill 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
Elastomer MB0502018A
#B76

Treadmill diagram

Elastomer

Part #MB0502018A

Replaced by #018951-A

?
Manufacturer substitution
This part replaces MB0502018A. Substitute parts can look different from the original.
$8.67
In Stock
Rail Lock MB0643001
#B12

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
Sensor MC0510031D
#P08

Treadmill 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
Bolt MZE0121003
#Z07

Treadmill diagram

Bolt

Part #MZE0121003

Replaced by #004864-00

?
Manufacturer substitution
This part replaces MZE0121003. Substitute parts can look different from the original.
This item is not returnable
$2.79
In Stock
Insert MZE0301009
#K16

Treadmill diagram

Insert

Part #MZE0301009

Replaced by #004972-00

?
Manufacturer substitution
This part replaces MZE0301009. Substitute parts can look different from the original.
This item is not returnable
$2.16
In Stock
Screw ME0121007A
#Q25

Treadmill diagram

Screw

Part #ME0121007A

Replaced by #004618-00

?
Manufacturer substitution
This part replaces ME0121007A. Substitute parts can look different from the original.
This item is not returnable
$2.16
In Stock
Air Shock ML0211077AX
#B41

Treadmill diagram

Air shock

Part #ML0211077AX

Replaced by #050470-AX

?
Manufacturer substitution
This part replaces ML0211077AX. Substitute parts can look different from the original.
$32.63
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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