Boat is a 1988 low hours, second owner sense 1990, dad fished with me passed on 6 years ago boat has been out of use sense then, except in 2010 we did all wood over put it in the pond and it ran like a top about 15 min. into ride at full throttle a alarm went off throttle down to half throttle it would shut off could get up to about 3/4 throttle and it would go off again so boat got re winterized and did not get run last year my son wants to get it back on water does anyone have any ideas what could be wrong or wear would be a good place to take it around Salem NH area, don’t mind trailering a reasonable distance for a good place any information would be appreciated thanks Ps. its a 90 horse Johnson 4 cylinder oil injected