I have a zero turn mower and when I cranked it up it ran for about a minute then the motor quit running. When trying to get the motor running again it would run for about 5 seconds and shut down. We changed the filter and took the carburetor off and cleaned it and the same thing it would run about 5 seconds and the motor would shut off. We put a new carburetor on and the motor still not run. We checked also to see if the fuel pump was working and it appeared to be pumping enough fuel. The motor will continue turn over but just will not run.