Hello, I'm unable to find the owners manual for the trimline treadmill model 7150 I purchased from a friend a few years ago. I know he have it to me but its been misplaced. Also, I'm unable to enter a weight higher then 146. I'm hoping that's kilograms and not pounds. Please advise how to switch it back to pounds or if this is an indication of a problem with the machine. Any help would be greatly appreciated. Thanks, Tom