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Model # 820T Official Horizon treadmill
Here are the diagrams and repair parts for Official Horizon 820T treadmill, as well as links to manuals and error code tables, if available.
By Schematic
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820T Fitness & Exercise
#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
#P12
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
#KIT
Treadmill diagram
T-wrench
Part #MZE1002003
Replaced by #005393-00
?
Manufacturer substitution
This part replaces MZE1002003. Substitute parts can look different from the original.
$8.50
In Stock
#C06
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
#Q14
Treadmill diagram
Screw
Part #ME0123003
Replaced by #004870-00
?
Manufacturer substitution
This part replaces ME0123003. Substitute parts can look different from the original.
This item is not returnable
$2.16
In Stock
#P14
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
Washer
Part #MZE0502017
Replaced by #020425-00
?
Manufacturer substitution
This part replaces MZE0502017. Substitute parts can look different from the original.
This item is not returnable
$2.16
In Stock
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
#B31
Treadmill diagram
Nylon nut
Part #ME0204025
Replaced by #004941-00
?
Manufacturer substitution
This part replaces ME0204025. Substitute parts can look different from the original.
This item is not returnable
$2.16
In Stock
#B24
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
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.…