You posted under Woods 59383
Manual for 59383:http://waterheatertimer.org/pdf/Woods-59383.pdf
If you have different model Woods timer, see link below, or add a comment.http://waterheatertimer.org/Woods-timers-and-manuals.html
To set Woods 59383:
Rotate dial clockwise until current time lines up with arrowhead located on inner dial.
Segments located around dial control on-off times.
Pull segments UP for OFF times.
Leave segments DOWN for ON times
Set manual override switch to arrow-down position
Switch unit to ON position.
Plug in timer.
Plug lights into timer.
If lights have switch, switch must be ON.
Max load 500 watts
50-mini-bulb string of Christmas lights is 25 watts