hi, we have another exmark that has been stalling randomly from time to time and couldn't figure out if it was a fuel problem or an electrical. as of late we put a larger fuel filter on it as our other one seemed to be running really low and the machine would stall...like it was running out of gas. Anyway the new filter keeps it running longer but the level still goes down low as you run it over time.... anyone know what coudl be causing not enough fuel flow to be getting to the filter and the filter fuel level to slowly go down until it is crying for gas? main line has been replaced. does it on both tanks. any help appreciated would it be a bad fuel "pump" the pump on these isn't electrical but vaccuum. clogged tank maybe? its weird it will run low but when i come back in the morning after sitting fuell filter will be full again. thanks!