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Model # T52 Official Horizon treadmill
Here are the diagrams and repair parts for Official Horizon T52 treadmill, as well as links to manuals and error code tables, if available.
By Schematic
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T52 Fitness & Exercise
#M03
Horizon treadmill diagram
Controller
Part #SZTM113MCB
Replaced by #032669-IF
?
Manufacturer substitution
This part replaces SZTM113MCB. Substitute parts can look different from the original.
This item is not returnable
$233.84 |
5% OFF Phone Price : $245.84
In Stock
#P04
Horizon 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
#P02
Horizon 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
#B58
Horizon treadmill diagram
Elastomer
Part #MB0502017D
Replaced by #000768-D
?
Manufacturer substitution
This part replaces MB0502017D. Substitute parts can look different from the original.
$13.60
In Stock
#N24
Horizon treadmill diagram
Safety key
Part #S140115001
Replaced by #016167-Z
?
Manufacturer substitution
This part replaces S140115001. Substitute parts can look different from the original.
$28.05
In Stock
#H27
Horizon treadmill diagram
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
$2.26
In Stock
#P29
Horizon treadmill diagram
Screw
Part #ME0102021
Replaced by #004364-00
?
Manufacturer substitution
This part replaces ME0102021. Substitute parts can look different from the original.
This item is not returnable
$2.52
In Stock
#B57
Horizon treadmill diagram
Elastomer
Part #MB0502016D
Replaced by #000767-D
?
Manufacturer substitution
This part replaces MB0502016D. Substitute parts can look different from the original.
$17.69 |
10% OFF Phone Price : $19.69
In Stock
#L05
Horizon treadmill diagram
Wheel
Part #MB0103040CA
Replaced by #000037-CA
?
Manufacturer substitution
This part replaces MB0103040CA. Substitute parts can look different from the original.
This item is not returnable
$2.26
In Stock
Screw
Part #ME0107015
Replaced by #004617-00
?
Manufacturer substitution
This part replaces ME0107015. Substitute parts can look different from the original.
This item is not returnable
$2.40
In Stock
Symptoms for treadmills
Choose a symptom to see related treadmill repairs.
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…
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: no power, bad power cord, tripped or faulty overload switch, bad power switch, wiring failure, bad motor co…
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
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 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

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…
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.

Get answers to frequently asked questions about Sears and Sears PartsDirect.…