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Horizon QUANTUM II treadmill Parts
Here are the diagrams and repair parts for Horizon QUANTUM II treadmill, as well as links to manuals and error code tables, if available.
By Schematic
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Browse Parts for QUANTUM II Fitness & Exercise
Treadmill assembly diagram
Bolt
Part #MJ3022002D
The manufacturer no longer makes this part, and there's no substitute part
Treadmill assembly diagram
Air Shock
Part #ML0211002
The manufacturer no longer makes this part, and there's no substitute part
Treadmill assembly diagram
Tube
Part #SP0003023C
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 assembly diagram
Washer
Part #MZE0502157
The manufacturer no longer makes this part, and there's no substitute part
Treadmill assembly diagram
Screw
Part #ME0123003
The manufacturer no longer makes this part, and there's no substitute part
Treadmill assembly diagram
Level Dev
Part #MB0301002
The manufacturer no longer makes this part, and there's no substitute part
Treadmill assembly diagram
Decal
Part #MG0256001
The manufacturer no longer makes this part, and there's no substitute part
Treadmill assembly diagram
Screw
Part #MZE0102002
The manufacturer no longer makes this part, and there's no substitute part
Treadmill assembly diagram
Washer
Part #MZE0502033
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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