Just uncovered the boat from its winters nap.Motor started right up as usual but after idling for five minutes the buzzer sounded and the overheat light came on. Shut it down immediately.Water was pumping out of the indicator so I guess the water pump was working.Let it sit for half hour started up again and same thing.Where do I start or do I just call a mechanic but dont want to shell out the cash this day and age if its something simple.I must add I was using the muffs. Thanks Mike