Replace receptacle.buy new receptacle.Turn off power.Pull out receptacle.Connect black hot wires to side with narrow blade.White neutral wires to side with wide blade.http://waterheatertimer.org/images/Outlet-polarity-200.jpghttp://waterheatertimer.org/images/Switch-quick-connect-400.jpg If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7
4) If you are looking for a manual to post on your site, I cannot find one at this moment.
5) If you have instruction sheet and need help programming timer, then add a comment and say what part of instruction is confusing, or take advantage of fixya live help and expert speaks with you over phone while you program timer.