Hi, just joined and bought a 2006 2275RL. It is a Tri-Toon with Strakes and 150 HP Yamaha. I am still figuring out everything on the boat. My tachometer has a LCD hour-meter on it. When the engine is running, an icon shaped like an hourglass? or a square figure eight? flashes at me. What is it trying to tell me? HELP!