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Why is the left side of the belt still stopping on my Proform 520x treadmill even after I lubricated the belt?
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The left side of the walking belt is still sticking when I walk on it. The right side works great after the lubrication. Do I need to lubricate the left side more or could it be another problem?
1 Answer from this member:

I recommend that you check the alignment and tension of the belt using the procedures in the image below. You may need to add more lubricant on the left side if it was not distributed well to that side. This may fix the problem.
If you need more help, resubmit your question with additional details.
If you need more help, resubmit your question with additional details.

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