June 29, 2015

Easy DIY treadmill repairs

By Sears PartsDirect staff
Easy DIY treadmill repairs.

A home treadmill lets you get your exercise without a trip to a gym. But if that treadmill stops working, waiting for a service technician to fix it could throw your exercise routine off its stride. Luckily, there are some common repairs you can handle yourself.

Treadmill doesn't go at the right speed

When you set the speed on the control panel settings, the motor controller tells the motor how fast or slow it should go. If the treadmill doesn’t seem to be moving at the speed you set, the most likely cause is the motor controller.  It's an easy component to replace, and the job takes about 15 minutes following the steps in our repair guide How to replace a treadmill motor controller.

Treadmill drive motor isn't working

The drive motor on a treadmill rotates to turn the walking belt. If it stops working, the treadmill won't move. While replacing the motor might sound a bit intimidating, it's actually a very easy repair. Our repair guide How to replace a treadmill drive motor gives detailed instructions on how to fix this problem yourself.

Treadmill slows down or feels unstable

The walking belt is the surface your feet touch as you walk or run on a treadmill. The walking board supports the walking belt, providing a smooth and stable surface.

If either the belt or the board becomes worn or warped, the belt slows or rubs against the board. You usually can tell if the board or the belt is the problem just by looking at them, and both are easy DIY repairs.

Find instructions for replacing the walking belt in our DIY repair guide How to replace a treadmill walking belt. If the walking board needs to be replaced, find out how to do it in our repair guide How to replace a treadmill walking board.

For more treadmill troubleshooting tips and advice, see our DIY treadmill repair section.

Symptoms for treadmills

Choose a symptom to see related treadmill repairs.

Main causes: damaged walking belt, improper belt tension, lack of belt lubricant, bad drive motor
Main causes: no power, bad power cord, tripped or faulty overload switch, bad power switch, wiring failure, bad motor control board
Main causes: bad control console, wiring failure, bad motor control board
Main causes: rear roller out of alignment, damaged walking belt, bad roller
Main causes: damaged walking belt, improper belt tension, bad roller bearing
Main causes: faulty sensors, wiring failure, bad control console
Main causes: missing safety key, bad control console, wiring failure, faulty motor control board, bad drive motor
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 these steps.

Repair difficulty
Time required
 45 minutes or less
June 1, 2015
By Lyle Weischwill
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 walking board if it's worn or damaged.

Repair difficulty
Time required
 30 minutes or less
June 1, 2015
By Lyle Weischwill
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't run.

Repair difficulty
Time required
 15 minutes or less
Articles and videos for treadmills

Use the advice and tips in these articles and videos to get the most out of your treadmill.

December 21, 2016
How to troubleshoot treadmill problems
By Sears PartsDirect staff

See what to check if you're having a problem with your treadmill, and what you can do to fix it.

June 29, 2015
Easy DIY treadmill repairs
By Sears PartsDirect staff

Learn about treadmill repairs that you can easily do yourself.

May 10, 2015
How to maintain a treadmill
By Sears PartsDirect staff

Keep your treadmill in shape by following these tips.