Model #831297763 PROFORM Treadmill

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Question and Answers

Q:

My Pro.Form 725 perfromance treadmill stops and displays an E2 error message.

A:

Having a Treadmill that is not working can be frustrating. I have taken the time to research on the Manage My Life website and have located similar information towards your issue. While you are waiting for a detailed reply from an expert I have attached the links below. Hope this helps!

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Priscilla V -
February 14, 2012
A:

According to the service manual for this model: E2- SPEED SENSOR Error

  • This error indicates the console is not receiving a speed signal when the treadmill���s speed setting has been increased above 0.0 MPH. Possible causes of this error are a nonfunctional speed sensor, the optic disk not passing through the speed sensor, a broken wire between the speed sensor and power board or the power board and console, or a faulty motor or motor controller.


If you remove the motor hood and look on the end of the motor shaft you will see the speed disk and sensor (right next to the disk). Check to make sure the disk is in place and not damaged. Check the sensor to make sure it's not dusty as this would block the signal. Check the wires to the sensor and make sure everything there looks good.

If everything appears to be in order then it's likely the sensor has just failed. You can order a replacement sensor HERE with part number 102955. If that does not take care of it then the controller has failed. I don't figure the controller to be bad as normally that failure will kick up additional error codes or there would be something else besides just the E2 code.

Thank you for using Manage My Life!

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XX Wade_ -
Sears Technician
February 15, 2012
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Q:

How do we replace the walking belt on our Pro-Form 725 TL treadmill?

A:

The instructions for replacing the belt on a treadmill have never been printed. There are so many models with different variations it would be very difficult to do. Technicians are taught the basics at training sessions and are expected to adapt to the model they are working on.

Basically you disconnect the power to the treadmill and remove the motor hood. Remove the drive belt from the motor and front roller.

Remove the side rails and the rear end caps. Remove the walking board.

Remove the adjusting bolts for the rear roller and remove both front and rear rollers.

Slide the walking belt off the right side of the rollers.

Reverse these instructions for installation of new belt.

If you require further assistance please resubmit your question with more details. I will be looking forward to helping you again in the near future.

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Landell -
Sears Technician
March 04, 2010
A:

We have the back roller off and the motor hood as well as the drive belt. We can't get the front roller off. Can't find a bolt to loosen it. Help!

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Neal Orange -
July 25, 2011
A:

Ed R. and Mark T, experts also answered my question. I don't know how to get back to them for their help.

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Neal Orange -
July 25, 2011
A:

Neal - did you figure out how to remove the front roller? I'm having the same problem in that I need to replace the belt but can't get the front roller off. Help!

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Sheila -
August 15, 2011
A:

Yes we did. After a lot of head scratching, it came to raising the incline up. It slipped right out. Hope this helped.

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Neal Orange -
August 15, 2011
A:

The belt walks to slow down and almost come to a stop. It runs great with out any one walking on it. Can any one help with this?

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Neal Orange -
August 15, 2011
A:

Neal -- do I take the front roller off before or after you take the back roller off? Thanks for your help! Once I get mine replaced then I'll work on the speed.

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Sheila -
August 15, 2011
A:

Take back roller off, better yet, did you get a new belt? If so, unroll the belt and the instructions are wrapped in the belt. If not, I have them and would email them to you.

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Neal Orange -
August 15, 2011
A:

No, my replacement belt didn't come with instructions. I did find a bunch of instructions during my internet search but not one mentioned raising the incline.

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Sheila -
August 16, 2011
A:

Would you like the instructions? I can email them to you if you like. I had found a bunch on the internet as well and could not get the front roller off until I got the instructions out of the box. Let me know if you want them.

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Neal Orange -
August 16, 2011
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Q:

How to install a replacement belt on Proform Model 831-297763

A:

I'm sorry that you are having some difficulties with your Proform Treadmill. Managemylife.com is a great web site to receive expert assistance to just about everything. I did some research for you at managemylife.com and found an expert answer to a similar question that may shed some light on this problem. I have attached the link below. If you decide you would like to schedule service from a qualified technician I have also attached a link to searshomeservices.com. I hope theses links will be helpful until your expert can respond.

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James -
March 26, 2011
A:

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 owner's manual please follow the manufacturer's 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.

Thank you for using Manage My Life!

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XX Wade_ -
Sears Technician
March 28, 2011
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