The serial number on the AbCoaster® CS1500 consists of an alphanumeric code that identifies the production batch of that particular unit. It will start with 2 or 3 letters (most frequently ABS or SW) followed by a series of numbers and letters. The sticker with the serial number will be located on the front foot or on the front support upright on newer models (these can be identified by having metal end caps on the feet that have been welded on). Older models will have their sticker on the bottom of the seat mount plate (for models with either rubber or hard plastic foot end caps).
When asked for the serial number and you are unable to locate the sticker, please feel free to send a picture of where you believe the serial number should be, and a picture of the entire unit to Parts@TheAbsCompany.com and we will be happy to assist you in determining the make and model of your unit.