I was running across the lake the other day and noticed that my oil light was on the yellow part. Not the green and not the red. So I stoped and turned the outboard off and looked and saw plenty of oil in the main tank. I pulled the cowling and had 3/4 full on that tank. So i went on my day of fishing but only running the boat around 3000 rpms. So I went to the ranger store and bought my oil and filled up the tank. So I have the tank 100 percent full and the tank under the engine cover full (between the lines). But still I have the yellow light on. What could be the Problem? The only thing that I did was hold up the emergence switch to pump the oil to the motor tank. So the pump works and both tanks are full. I'm lost!