Hi. I have a 60 inch lazer with a 25hp kohler motor on it. At first when you start it up the fuel filter will fill up but once the motor gets some heat in it the fuel pump does not fill up the filter and as soon as you put a load on it, it will bog down. It seems like the fuel pump is not getting enough vaccum to it to create enough suction to get the fuel flowwing into it. I,ve replaced the pump, lines and filter and still no luck. The motor has a lot of hours on it. I was wondering if anyone else had this sort of problem. Any help would be great.