I took the carb apart and found a lot of hard deposits. Some passages were completely blocked. After a good cleaning, the passages were blown out with compressed air to ensure they flowed. The float was adjusted, and it was put together with new parts from a kit. It is VERY important that it goes back together completely. The kit came with a diagram that showed an exploded drawing of it, but it seemed to be missing a check ball and spring that were on the carb when it came apart. I looked in the Mercruiser shop manual and it showed these. The kit did come with them, so it was weird that it was not shown. The kits will work with a few different variations of this carb, so ensure you have the proper book for yours.