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Sudden Variable Speed on ProForm 615 XP

I have a ProForm 615 XP that suddenly, while my husband was running on it the belt was skipping causing sudden jolting variations in speed. It is so bad that each of us felt it would cause us to fall if we tried to run on it. What do you think is the problem? Can we fix it? We are both in a 10 mile run in a week!

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Dear mam,

Please check the speed sensor and Belt Tension also.

sada

Posted on Sep 28, 2009

  • dwi fitriani
    dwi fitriani Nov 28, 2013

    please look imange sample speed sensor

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