Z726 Zero Turn Mower Shuts Off

[AlsZ726]

My Z726 runs fine for about 2 hours then starts to run rough then finally shut off. I have changed the fuel filter, spark plugs, and air filter and it still happens. I let it sit for a day and then it runs fine for another 2 hours. This has happened 3 times. Any suggestions?

 

[mikester]

Check your fuel tank vent. If you open the gas cap lid does it run again? Are you air filters clean?

 

[whitetiger]

My Z726 runs fine for about 2 hours then starts to run rough then finally shut off. I have changed the fuel filter, spark plugs, and air filter and it still happens. I let it sit for a day and then it runs fine for another 2 hours. This has happened 3 times. Any suggestions?

Remove the fuel hose from the shut-off valve on top of the fuel tank, now withdraw the shut-off valve and suction tube from the fuel tank. Using compressed air, blow into the shut-off valve to see if you blow any debris out of the valve and suction tube. It may very well be plugged up.