Hey all. I am finally an owner of an Exmark, WAA HOO! Now I have a problem. It is a 27 hp Kaw that is water cooled. About every 10-15 sec at idle, it will spit back through the intake. Plugs read fine, little color and what is there is a very light tan, no oil or fuel fouling. I have no problem taking off fuel lines or the carb and going through it. It has set all winter so I have my doubts about the fuel. It doesn't seen to be an intake valve but I will run pressuer tests and leak down on it this weekend. It seems to run fine and pulls well. I can't think this is Kaws' was of working the governer. I am open to suggestions, all. It has about 1700 hours on it. I will change the fluids before the season starts so I have a base for service records. Feel free to email me at email@example.com. Thanks for a great forum!!