Treadmill

Model # 3.0T Official Horizon treadmill

Here are the diagrams and repair parts for Official Horizon 3.0T treadmill, as well as links to manuals and error code tables, if available.

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3.0T Fitness & Exercise
Socket MC0703023
#P11

Treadmill assembly diagram

Socket

Part #MC0703023

Replaced by #019749-A

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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
Breaker MC0702011
#P04

Treadmill assembly diagram

Breaker

Part #MC0702011

Replaced by #003346-00

?
Manufacturer substitution
This part replaces MC0702011. Substitute parts can look different from the original.
In Stock
Drive Belt MD0602001
#R03

Treadmill assembly diagram

Drive belt

Part #MD0602001

Replaced by #1000109551

?
Manufacturer substitution
This part replaces MD0602001. Substitute parts can look different from the original.
$55.69
10% OFF Phone Price : $61.69
In Stock
Washer MZE0505033
Washer

Part #MZE0505033

Replaced by #005196-00

?
Manufacturer substitution
This part replaces MZE0505033. Substitute parts can look different from the original.
This item is not returnable
In Stock
Console Cable MC0502044A

#NI03

All parts diagram

Console cable

Part #MC0502044A

Replaced by #002103-A

?
Manufacturer substitution
This part replaces MC0502044A. Substitute parts can look different from the original.
In Stock
Bolt MJ3022012A
#Z09

Treadmill assembly diagram

Bolt

Part #MJ3022012A

Replaced by #008626-B

?
Manufacturer substitution
This part replaces MJ3022012A. Substitute parts can look different from the original.
This item is not returnable
In Stock
Fix Plate MJ1040005C
#B52

Treadmill assembly diagram

Fix plate

Part #MJ1040005C

Replaced by #007490-C

?
Manufacturer substitution
This part replaces MJ1040005C. Substitute parts can look different from the original.
This item is not returnable
In Stock
Motor Set SZTM103MTR
#M01

Treadmill assembly diagram

Motor set

Part #SZTM103MTR

Replaced by #016118-Z

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Manufacturer substitution
This part replaces SZTM103MTR. Substitute parts can look different from the original.
In Stock
Roller MR0902010D
#AR2

Treadmill assembly diagram

Roller

Part #MR0902010D

Replaced by #1000108449

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Manufacturer substitution
This part replaces MR0902010D. Substitute parts can look different from the original.
$147.39
8% OFF Phone Price : $159.39
In Stock
Screw-console Case MZE0107042
#Z69

Treadmill assembly diagram

Screw-console case

Part #MZE0107042

Replaced by #004632-00

?
Manufacturer substitution
This part replaces MZE0107042. 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.…