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Question About ProForm Treadmill 660 Series I Crosstrainer
The belt feels like it's slipping which makes it h...

The belt feels like it's slipping which makes it hard to walk on. Is there a way to tighten the belt and, if so, how?

Asked by Debbie on 12/10/2013 0  Answer

ManualsOnline posted an answer 10 years, 9 months ago

The ManualsOnline team has found the manual for this product! We hope it helps solve your problem. Get the Manual Here

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