Treadmill: Why is my treadmill's walking belt slipping?
A damaged or loose walking belt will slip on the front roller. A bad bearing on a roller can cause the roller to bind and the walking belt to slip.
Check both rollers to make sure that they spin freely. If a roller binds up because its bearing is bad, replace the roller.
Check the walking belt for tears and replace the belt if torn or damaged.
Check walking belt tension by lifting the middle edge of each side of the belt. You should be able to lift the belt's edge up 2-3 inches above the walking board. Tighten belt tension if you can lift the edges of the walking belt more than 3 inches.
THESE REPAIRS MAY HELP SOLVE YOUR TREADMILL PROBLEM
Replace the treadmill walking belt
The walking belt rotates rubs over the platform while walking which can wear and cause the walking belt to slow down when walking. Replace the walking belt when worn or damaged.
Treadmill walking belt
Replace the treadmill roller
The walking belt fitted and tensioned between the front and rear belt rollers can wear and become noisy. Replace the belt roller when it becomes worn and noisy.
Your treadmill motor won't run with a defective motor controller. Replace the motor controller if it doesn't operate the motor correctly.
A worn walking belt will begin to slow down during use. If your treadmill walking belt is worn out, replace it using these steps.