Hi I have a 95 mercury 50 hp motor on my boat and it is not pumping water properly? I hooked my hose and ear muffs up to get her going and the water was not traveeling up and out of where it is supposed to come out of. Also when I star her up after about 5-10mins an alarm sounds and wontt stop? Does anybody know what I can do to fix tthis or will I need to take it somewhere for someone else to fix?
Thanks

That is a sign of a weak/damaged impeller. The alarm you hear is a overheat alarm. To prevent anydamage replace the impeller or carry to a service center and have replaced