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Horizon CST3.5X treadmill Parts
Here are the diagrams and repair parts for Horizon CST3.5X treadmill, as well as links to manuals and error code tables, if available.
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Browse Parts for CST3.5X Fitness & Exercise
Treadmill diagram
Bolt
Part #MZE0121003
The manufacturer no longer makes this part, and there's no substitute part
Treadmill diagram
L-shaped Hex Wrench
Part #MZE1007001
The manufacturer no longer makes this part, and there's no substitute part
Treadmill diagram
C-clip
Part #MZE0701001
The manufacturer no longer makes this part, and there's no substitute part
Treadmill diagram
Deck Bolt
Part #MZE0105005
The manufacturer no longer makes this part, and there's no substitute part
Washer
Part #MZE0502054
The manufacturer no longer makes this part, and there's no substitute part
Treadmill diagram
Wire Harness
Part #MC0501136A
The manufacturer no longer makes this part, and there's no substitute part
Nut
Part #MZE0201010
The manufacturer no longer makes this part, and there's no substitute part
Treadmill diagram
Washer
Part #MZE0504014
The manufacturer no longer makes this part, and there's no substitute part
Treadmill diagram
Decal, Console, Warning (1 Pcs)
Part #MG0205122A
The manufacturer no longer makes this part, and there's no substitute part
Wheel
Part #MB0103040CA
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 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
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
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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