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Lifestyler Expanse 850 treadmill belt slipping

My Lifestyler Expanse 850's belt has been slipping to the left. We have tried readjusting it according to the manual's instructions in the troubleshooting section but it just keeps slipping again and again. We have not been able to fix it. Any suggestions?

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2 Answers from these members:
Manage My Life
I'm sorry to hear that you are having some difficulties with your Lifestyler 850 Treadmill that is having a belt issue. I did some research for you at Managemylife and found an expert answer to a similar question that may help until your expert can respond to your specific question. The link is attached below.
by Manage My Life
January 17th, 2012
Answered in 5 minutes
0 votes
Mark T
Thank you for your question.

I am sorry you are having a problem with the treadmill. First, look at the end cap where the belt adjuster bolts are located. I have seen the end cap break and cause the problem you are having. The end cap should support the right and left adjuster bolt. When it breaks, the belt will slip to the broken side. The only way to the cure the problem, is to replace the end cap. The end cap can be ordered from our parts website:

Sears Parts Direct


If the end cap is fine, continue to tighten the left side adjuster. This should bring the waling belt back center. I have found a video that shows how to adjust the belt. Click


to watch the video.

I hope this helpful. Please let me know if you need further assistance.

If you do not feel confident repairing this problem yourself, then you can have it repaired at your home by a Sears technician. Here is a link for the website:

Sears Home Services


Thank you for using Manage my life.

Mark T.
by Mark T Earned 3,053 community points in Treadmills
January 18th, 2012
Answered in 19 hours
0 votes
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