Multi function gauge Oil tach

[jonp]

Hello All, I am new to the forum, not new to outboards and boating. I just purchased 1989 boston whaler with Yamaha 90. I would like info on the multi-function gauge. I want be confortable in its operation. I had a V6 Merc before and the self tests and warning horns were differnt. Any docs out there on this. My email is jonpolonez@aol.com

Thanks