No stealing necessary. If you know the model, almost all companies
have pdfs of their manuals online.

Chances are, the make is Intermatic, but it could be Leviton, or
something else. If it's an Intermatic EJ351, like Bob said, the
instructions can be found he

http://www.intermatic.com/images/ins...158ej11589.pdf

If not, you can find the model like Joseph described, or wander around
online looking at pictures until you see one that looks likes yours.
Google "timer switch" and you should find plenty.