Get free shipping on your order, with any water filter subscription. Find my filter

Open Hamburger Menu
Sears Parts Direct
Tips to find your model number
Horizon QUANTUM treadmill

Horizon QUANTUM treadmill Parts

Here are the diagrams and repair parts for Horizon QUANTUM treadmill, as well as links to manuals and error code tables, if available.

By Schematic
SELECT DIAGRAM
?

This is the number corresponding to the part on the diagram / schematic

Browse Parts for QUANTUM Fitness & Exercise

  • Sleeve for Horizon QUANTUM - Part MJ3021002A

    Treadmill assembly diagram

    Sleeve

    Part #MJ3021002A

    The manufacturer no longer makes this part, and there's no substitute part

  • Level Dev for Horizon QUANTUM - Part MB0301002

    Treadmill assembly diagram

    Level Dev

    Part #MB0301002

    The manufacturer no longer makes this part, and there's no substitute part

  • Spring for Horizon QUANTUM - Part MZE1103002

    Treadmill assembly diagram

    Spring

    Part #MZE1103002

    The manufacturer no longer makes this part, and there's no substitute part

  • Spring for Horizon QUANTUM - Part MZE1103001

    Treadmill assembly diagram

    Spring

    Part #MZE1103001

    The manufacturer no longer makes this part, and there's no substitute part

  • Screw for Horizon QUANTUM - Part MZE0106017

    Treadmill assembly diagram

    Screw

    Part #MZE0106017

    The manufacturer no longer makes this part, and there's no substitute part

  • Fix Plate for Horizon QUANTUM - Part MJ1040005C

    Treadmill assembly diagram

    Fix Plate

    Part #MJ1040005C

    The manufacturer no longer makes this part, and there's no substitute part

  • Bott Cover for Horizon QUANTUM - Part MB0237004B

    Treadmill assembly diagram

    Bott Cover

    Part #MB0237004B

    The manufacturer no longer makes this part, and there's no substitute part

  • Motor Bracket for Horizon QUANTUM - Part SP0026009

    Treadmill assembly diagram

    Motor Bracket

    Part #SP0026009

    The manufacturer no longer makes this part, and there's no substitute part

  • Washer for Horizon QUANTUM - Part ME0108002

    Treadmill assembly diagram

    Washer

    Part #ME0108002

    The manufacturer no longer makes this part, and there's no substitute part

  • Switch for Horizon QUANTUM - Part MC0701002

    Treadmill assembly diagram

    Switch

    Part #MC0701002

    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

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

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

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.

Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect.…

Parts & More

Dryer
Electric Wall Oven
Front-Engine Lawn Tractor
Furnace
Gas Line Trimmer
Gas Snowblower
Gas Walk-Behind Mower
Lawn & Garden Engine
Parts
Refrigerator
Side-By-Side Refrigerator
Treadmill
Washer
Wine & Beverage Cooler