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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.
By Schematic
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Browse Parts for CST3.5X Fitness & Exercise
Treadmill diagram
Support Tube-l (1 Pcs)
Part #SP0003077AA
The manufacturer no longer makes this part, and there's no substitute part
Treadmill diagram
Screw (2 Pcs)
Part #MZE0107081A
The manufacturer no longer makes this part, and there's no substitute part
Screw
Part #MZE0112034
The manufacturer no longer makes this part, and there's no substitute part
Treadmill diagram
Arc Washer
Part #ME0503001
The manufacturer no longer makes this part, and there's no substitute part
Washer
Part #MZE0502025
The manufacturer no longer makes this part, and there's no substitute part
Treadmill diagram
Motor Flywheel (1 Pcs)
Part #MD0103029A
The manufacturer no longer makes this part, and there's no substitute part
Treadmill diagram
L-shaped Hex Wrench
Part #MZE1007002
The manufacturer no longer makes this part, and there's no substitute part
Treadmill diagram
Screw
Part #MZE0112012
The manufacturer no longer makes this part, and there's no substitute part
Treadmill diagram
Washer
Part #ME0505064A
The manufacturer no longer makes this part, and there's no substitute part
Treadmill diagram
Cover
Part #MB0657002A
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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