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Horizon
Elliptical Machine

Model # EX-55 Official Horizon elliptical machine

Here are the diagrams and repair parts for Official Horizon EX-55 elliptical machine, 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 119 parts  |
Drive Belt MD0602035A
#R15

Elliptical diagram

Drive belt

Part #MD0602035A

Replaced by #004177-A

?
Manufacturer substitution
This part replaces MD0602035A. Substitute parts can look different from the original.
$32.69 | 
16% OFF Phone Price : $38.69
In Stock
Wheel MB0103006B
#L04

Elliptical 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
$5.25
In Stock
Sleeve ML0105003A
Sleeve

Part #ML0105003A

Replaced by #103299

?
Manufacturer substitution
This part replaces ML0105003A. Substitute parts can look different from the original.
This item is not returnable
$8.99 | 
10% OFF Phone Price : $9.99
In Stock
Bracket ML0259003B
#P01

Elliptical diagram

Bracket

Part #ML0259003B

Replaced by #009659-B

?
Manufacturer substitution
This part replaces ML0259003B. Substitute parts can look different from the original.
This item is not returnable
$2.16
In Stock
Screw MZE0107009
#P07

Elliptical diagram

Screw

Part #MZE0107009

Replaced by #004612-00

?
Manufacturer substitution
This part replaces MZE0107009. Substitute parts can look different from the original.
This item is not returnable
$2.16
In Stock
Wrench ME1007031A
#KIT

Elliptical diagram

Wrench

Part #ME1007031A

Replaced by #005427-A

?
Manufacturer substitution
This part replaces ME1007031A. Substitute parts can look different from the original.
This item is not returnable
$3.49
In Stock
B Bearing MD0501013
#R12

Elliptical diagram

B bearing

Part #MD0501013

Replaced by #004081-A2

?
Manufacturer substitution
This part replaces MD0501013. Substitute parts can look different from the original.
$12.09
In Stock
Bushing ML0105023A
#G12

Elliptical diagram

Bushing

Part #ML0105023A

Replaced by #103295

?
Manufacturer substitution
This part replaces ML0105023A. Substitute parts can look different from the original.
$11.91
In Stock
Lwr Link,l SZEP109LLA-L
#AH2

Elliptical diagram

Lwr link,l

Part #SZEP109LLA-L

Replaced by #013109-ZL

?
Manufacturer substitution
This part replaces SZEP109LLA-L. Substitute parts can look different from the original.
$132.80
In Stock
Washer ME0505055A
#E13

Elliptical diagram

Washer

Part #ME0505055A

Replaced by #005206-BB

?
Manufacturer substitution
This part replaces ME0505055A. Substitute parts can look different from the original.
This item is not returnable
$3.65
In Stock

Symptoms for elliptical machines

Choose a symptom to see related elliptical repairs.

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Why does my elliptical rock?

Main causes: leveling feet need to be adjusted, loose frame bolts, unstable flooring…

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Why won't my elliptical's console turn on?

Main causes: dead batteries, power supply failure, bad wiring connections, faulty control console…

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How do I tighten elliptical handle bars?

Main causes: loose fastening bolts, damaged handle bars…

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Why is my elliptical's console display dim?

Main causes: weak batteries, loose wires, faulty control console…

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Why won't my elliptical's pedal resistance change?

Main causes: bad resistance motor, faulty control console, wiring failure…

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Why does my elliptical display the wrong speed?

Main causes: faulty reed switch, reed switch needs adjustment, wiring failure, bad control console…

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Why does my elliptical make squeaking noises?

Main cause: lack of lubrication on pivot points…

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Why can't my elliptical detect my heart rate?

Main causes: dirty heart rate sensors, wiring failure, bad control console…

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Repair guides for elliptical machines

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

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How to replace an elliptical resistance motor

How to replace an elliptical resistance motor

If the resistance motor is not changing the resistance on your elliptical, replace it using these steps.…

Read more
Repair difficulty
Time required
 15 minutes or less
How to adjust an elliptical reed switch

How to adjust an elliptical reed switch

If the console doesn't display the correct speed on your elliptical, adjust the reed switch using these steps.…

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Repair difficulty
Time required
 15 minutes or less
How to replace an elliptical console

How to replace an elliptical console

If the console on your elliptical doesn't work, replace it by following these 3 easy steps.…

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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 elliptical.

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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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