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Horizon 3.1T treadmill Parts
Here are the diagrams and repair parts for Horizon 3.1T treadmill, as well as links to manuals and error code tables, if available.
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Browse Parts for 3.1T Fitness & Exercise
Treadmill diagram
Core
Part #MC0704005
The manufacturer no longer makes this part, and there's no substitute part
Treadmill diagram
Supp Mast
Part #SP0003040AA
The manufacturer no longer makes this part, and there's no substitute part
Treadmill diagram
Nylon Nut
Part #ME0204034
The manufacturer no longer makes this part, and there's no substitute part
Washer
Part #MZE0502197A
The manufacturer no longer makes this part, and there's no substitute part
Treadmill diagram
Console Cable
Part #MC0522013A
The manufacturer no longer makes this part, and there's no substitute part
Treadmill diagram
Wheel Cap
Part #MB0207003BB
The manufacturer no longer makes this part, and there's no substitute part
Treadmill diagram
Rail Lock
Part #SP0030005AC
The manufacturer no longer makes this part, and there's no substitute part
Treadmill diagram
Screw
Part #MZE0104074
The manufacturer no longer makes this part, and there's no substitute part
Decal-overlay B
Part #MG0256090A
The manufacturer no longer makes this part, and there's no substitute part
Treadmill diagram
Cover
Part #MB0236001BB
The manufacturer no longer makes this part, and there's no substitute part
Most common symptoms to help you fix your fitness & exercise
Choose a symptom to see related treadmill repairs.
Main causes: bad resistance motor, faulty control console, wiring failure…
Main causes: dead batteries, power supply failure, bad wiring connections, faulty control console…
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 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 time and Difficulty
45 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 time and Difficulty
30 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 time and Difficulty
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.
Get answers to frequently asked questions about Sears and Sears PartsDirect.…
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