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Why Is My Treadmill's Walking Belt Slipping?

Troubleshooting and Solutions

If your treadmill's walking belt is slipping, it can make your workout unsafe and ineffective. Here are some common reasons for this issue and steps to troubleshoot and fix it:

Common Causes:

  1. Loose Walking Belt:

    • The walking belt might be too loose, causing it to slip during use.
  2. Worn or Damaged Drive Belt:

    • The drive belt that connects the motor to the walking belt might be worn or damaged.
  3. Improper Belt Tension:

    • The walking belt might not have the correct tension, leading to slippage.
  4. Dirty or Worn Deck:

    • Dirt or wear on the treadmill deck can increase friction and cause the belt to slip.
  5. Motor Issues:

    • Problems with the motor can cause inconsistent belt movement, leading to slippage.

Troubleshooting Steps:

  1. Adjust the Walking Belt Tension:

    • Turn off the treadmill and unplug it from the electrical outlet.
    • Locate the adjustment bolts at the rear of the treadmill, usually found on either side of the walking belt.
    • Use an Allen wrench to tighten the tension bolts. Turn the bolts clockwise to tighten the belt.
    • Make small adjustments and test the belt by walking on it. Repeat the process until the belt is tight enough to stay in place without slipping.
  2. Inspect and Replace the Drive Belt:

    • Turn off the power to the treadmill and unplug it.
    • Remove the motor cover to access the drive belt.
    • Check the drive belt for any signs of wear, damage, or looseness.
    • If the drive belt is loose, tighten it according to the manufacturer's instructions. If it is worn or damaged, replace it with a new one.
  3. Clean the Treadmill Deck:

    • Turn off the treadmill and unplug it.
    • Lift the edges of the walking belt and clean the treadmill deck underneath with a damp cloth to remove any dirt or debris.
    • Ensure the deck is dry before using the treadmill again.
  4. Lubricate the Walking Belt and Deck:

    • Turn off the treadmill and unplug it.
    • Lift the edges of the walking belt and apply a treadmill-specific lubricant between the belt and the deck.
    • Spread the lubricant evenly and run the treadmill at a low speed for a few minutes to distribute the lubricant.
  5. Check the Motor:

    • Turn off the power to the treadmill and unplug it.
    • Inspect the motor for any visible signs of damage or wear.
    • Ensure the motor is clean and free from dust and debris.
    • If the motor is overheating or making unusual noises, it may need to be repaired or replaced.
  6. Test the Motor Control Board:

    • If the motor and drive belt are in good condition, the motor control board might be the issue.
    • Turn off the power to the treadmill and unplug it.
    • Access the motor control board, usually located near the motor.
    • Inspect the board for any visible signs of damage or burnt components.
    • Use a multimeter to test the motor control board for continuity. If it is faulty, consider having it repaired or replaced.

Replacing Faulty Components:

  1. Replacing the Drive Belt:

    • Purchase a replacement drive belt that matches your treadmill model.
    • Follow the manufacturer's instructions to replace the drive belt. Typically, this involves loosening the motor bolts, removing the old belt, installing the new belt, and tightening the motor bolts.
  2. Repairing or Replacing the Motor Control Board:

    • If the motor control board is identified as the issue, consider sending it to UpFix for repair. This can save you up to 80% compared to buying a new motor control board.
    • Remove the faulty motor control board and send it to UpFix. Reinstall the repaired board once you receive it back.

Additional Solutions:

If you identify that the issue is related to the motor control board or other electronic components, consider sending your faulty components to UpFix for repair. UpFix offers repair services that can save you up to 80% compared to buying new components, while also supporting an eco-friendly service by reducing electronic waste.

Safety Reminder:

Always turn off the power to the treadmill and unplug it before performing any repairs or adjustments. If you are unsure about any steps, it’s crucial to contact a professional technician for assistance.


For a cost-effective and eco-friendly solution to motor control board and electronic component issues, send your faulty components to UpFix for repair and save up to 80%! Visit UpFix.com for more details.