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Horizon
Treadmill

Model # 3.3T Official Horizon treadmill

Here are the diagrams and repair parts for Official Horizon 33T 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 159 parts  |
Pcb Assembly SJED08089ED
#M03

Treadmill diagram

Pcb assembly

Part #SJED08089ED

Replaced by #032669-IF

?
Manufacturer substitution
This part replaces SJED08089ED. Substitute parts can look different from the original.
This item is not returnable
$227.23 | 
5% OFF Phone Price : $239.23
Back Order
Bottle Set MF0821002A
#KIT

Treadmill diagram

Bottle set

Part #MF0821002A

Replaced by #1000092805

?
Manufacturer substitution
This part replaces MF0821002A. Substitute parts can look different from the original.
This item is not returnable
$16.01 | 
11% OFF Phone Price : $18.01
In Stock
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
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 | 
18% OFF Phone Price : $33.79
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
$5.25
In Stock
Console Cable MC0522013A
#P07

Treadmill diagram

Console cable

Part #MC0522013A

Replaced by #002424-A

?
Manufacturer substitution
This part replaces MC0522013A. Substitute parts can look different from the original.
$14.29
In Stock
Deck Exten MB0603007AA
#B55

Treadmill diagram

Deck exten

Part #MB0603007AA

Replaced by #000825-AA

?
Manufacturer substitution
This part replaces MB0603007AA. 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
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
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

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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