I have a Super Z with a 25hp Kaw and my check engine light has started to come on after it is warmed up and I idol it down. The manual says nothing about it and the dealer told me not to worry about it as long as the my oil is full. Does anyone know what the check engine light is for? There is about 400hrs on the motor and is the only warning light on this unit. Thank you for any help on this matter. Pete R.