My Kohler generator has 2 air valves (looks like the type on a bicycle tire). One is located on what I think is the gasoline cooler. I say this is a cooler because the water intake and a gas line are hooked to the same block.
The second valve is located up by the carburetor or fuel intection...
My generator will run for about 30 minutes and then stop. It displays the CO 1 fault code. This is a carbon monoxide code of some sort. Has anyone encountered this problem? My boat is a 2007 and the genset has 20hrs.