How do I set date and time on my LA CROSSE weather station?

SOURCE: WS-1510-iT La Crosse Wireless Weather

My 1510-IT came with a faulty battery cover top for the rain guage. There should be a metallic clip mounted to the cover to tie the 2 batteries together electrically. Mine had nothing there. I soldered a wire between the 2 batteries and used some cardboard under the cover to make sure the batteries were pushed down into their holder. Problem solved!

I can't imagine this is systemic but it happened to me.