I have a 1995 40 HP 2 cycle on my 24 ft pontoon. The other day I was out with the wife and we came upon some underwater grass. We got out of it as soon as we could but not soon enough for the grass started to cover up the water intakes and stopped water from coming out of the water tube (pee hole). The warning buzzer went off and it took about 30 sec or so tyo get to a safe location to shut the motor down (we were nearing a damn). We shut it down, pulled the grass off and then restarted the motor. The warning buzzer sounded for about a second and then shut off. and water started to flow out the tube again. The motor ran nice at a little over idle but as I tied to rev it up higher the motor gave me a loud rumble so I backed her back down. She gave me enough power to get back in but I wanted to see what you guys thought before I started her up again.