Timer is not identified. Read through possibles options below:
Add a comment with simple description of the timer for possible identification of product and possible instruction.
If you have analog dial timer, then open following link for instructions:http://waterheatertimer.org/How-to-set-timers.html
Following link shows a variety of arlec timers: each timer has instruction manual that expert can access. Add a comment and say which of these timers is same-similar to your timer, and then say what part of manual is confusing.http://www.arlec.com.au/productCatalogues.aspx?ParentCatalogueID=4&catalogueID=5&Page=1
If you already have instruction sheet for timer, then add a comment and describe timer, and include what part of manual is confusing.
If you want expert to speak with you about programming the timer, then request fixya phone assistance. Expert can ask which timer you have, and answer specific questions while you program timer.