A surprisingly important component of exercise equipment maintenance especially for strength units; DONT peel off model/serial # stickers!!!!

Also save your original receipt and owners manual, if only a picture/copy/scan of it.

An excellent way to do this is to email it to yourself using Google's gmail "boomerang" feature, which will present you with a copy yearly and remind you it's time to service your machine!    

Just take a picture and send it to yourself with yearly repetition selected.