How To Replace Your Treadmill Belt

Paul Webb

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Is your treadmill belt worn, torn, or curling up on the edges? Does your treadmill slow down after you step on the belt and begin your workout?

If this is the case then it may be time to replace the belt.

Here are some things to check before replacing your belt.

*1. You need to make sure the deck of the treadmill is in good shape. If it looks good then it may only need to be waxed or lubricated.

*2. If the deck shows obvious signs of wear, or has grooves worn into it then you may need to replace the belt and the deck.

*3. If the deck looks good, and the belt is worn or starting to turn up on the edges then it is time to replace the belt. Here are the instructions for doing that. Most treadmills are basically the same so this is a generic set of instructions. If you have an owners manual please follow the manufacturers instructions.

To begin the belt replacement unplug the POWER Cord and remove the motor cover or hood. Then locate the screws or bolts that are used to adjust the belt tension. They are normally on either side at the rear of the treadmill. Loosen both sides and push the rear roller toward the deck.

Now loosen and remove the front roller. If your treadmill inclines, turn on the power and raise the treadmill a few degrees so the roller can be removed. After the front roller is removed, remove the rear roller. Now you are ready to remove the belt.

I know it would be easier to just cut the old belt off, but if you take it off in one piece then you will remember how to put the new one on. Along the sides of the treadmill you will find bolts or screws that hold the deck in place. Remove these and lift the deck and old belt out together. Now is the time to wax or lubricate the deck.

Look at the old belt and the new belt. There will probably be a visible seam on the belt. Normally the belt should be installed so that the seam goes downward from left to right, much like a backward slash. Some belt manufacturers will mark the belt on the inside with an arrow pointing in the direction the belt should travel.

Slide the belt over the deck in the proper alignment and lay the belt and deck together back onto the treadmill. Start all of the screws or bolts before tightening them securely. Decks tend to get warped after a while so you may need to push or pull a little to get the screws started. I have found that it is a good idea to install the rollers before securely fastening the deck to the frame.

Pull the belt to the rear of the treadmill and slide the rear roller through it. Start the adjusting screws in the roller just enough so they do not fall out. Now slide the front roller inside the belt and replace the drive motor belt over the drive gear. Do this before you tighten the roller. After you get the front roller tight, then tighten the rear roller with the adjusting screws. Tighten each side equally until the belt feels snug on the deck.

Now turn the treadmill on. If the belt starts moving, carefully step on the treadmill while holding the side rails. If the belt stops then you need to adjust more. Step off the treadmill, and tighten each screw one full turn and step on the belt again. Repeat this process until the belt does not stop.

Now increase the speed to a fast walk, hold the handrails and apply downward pressure as you walk on the treadmill. If the belt stops or hesitates then adjust some more. Now increase the speed to a jog, probably around five m. p. h. Once again if you feel hesitation in the belt when your foot hits it, adjust it some more. Continue this process until you are satisfied that the belt is not slipping.

PLEASE be careful, if you do not think you can do this then pay someone to do it for you.

Please follow these directions for safe and efficient use of your treadmill for you and your family.

The procedures for checking these items are all in the Treadmill Report!

About the Author:

Paul Webb has been in the medical and fitness repair business for almost thirty years. So he has seen many of the problems associated with treadmills and fitness equipment.

You can visit his website at or


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