Wait until midnight then disconnect/reconnect your positive terminal.
Worked on my Honda Civic every time!
Funny, I never thought to go to the Yamaha site to look for the manual (Google found it for me elsewhere).. Thanks for the idea.If you don't have it yet, go to the yamaha website and download an electronic copy of the owners manual... it'll be your best friend... search-able pdfs rule!
-Start the bike, hold down select and reset for two or more seconds
-use reset to set the hours (hours should be flashing)
-press select to get to minutes, use reset to set minutes
-then press select to set