How do i switch it from metric to usa miles and where can i get a manual? My stickers are missing, unknown model serial number or whst year it is. Runs great,i hold down the set and reset it wont switch km to pro sport series 600 7speed exercise bike magnetic resistance

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Hi, Susan could not find anything on the internet but you could take a picture of it and take the picture to a gym or a store that sells exercise equipment and maybe someone can point you in the right direction as far as make and model go. Good luck and have a nice day.
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