Model #831291030 WESLO Treadmill

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Walking Belt 831291030 Weslo Smooth strider


Thanks for the inquiry and for being a valued member.

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 5 MPH. 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. The new belt will more than likely have installation instructions with it. There are also some great YouTube videos you can watch for a visual reference.

I hope this helps and thanks for using We appreciate your business.  

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Jeff Wallace Sr -
Sears Technician
February 24, 2015