I have a 16' Lund w a 2002 Honda 4 stroke 50 hp motor.  It is a great running motor.  However, I had not been on the water for 6 weeks.  Yesterday I took it out and no water was coming out of the cooler.  I ran the motor very little and fished with the troller.  I imagine something is blocking the stream.  How do I clear it out?  Thanks,