Lawn mower with Kohler 23hp engine quits with gas still in tank?

I have a Ariens 48" zero turn lawn mower with a Kohler 23cv engine. I have replaced the air cleaner, spark plug, fuel filter, and fuel pump and no change. When mower quits there is still gas in the tank. I fill the tank to the top and it runs fine again, but it still won't run through a full tank of gas at one time. Any suggestions!!|||I am guessing that the engine quits with the same amount of fuel in the tank each time. The fuel pick up line in the tank is above the bottom and won't drain the tank completely. When it quits and you refuel does it start right back up? If so, you are just running out of gas. If it quits with different levels of fuel in the tank I would look at the filter and the fuel pump. If it quits and doesn't start right back up when you put fuel in it, you should also check the ignition. Coils will fail when they get hot and work when cooled down. It is easy to check for spark at the plugs.|||How much fuel is still in the tank when it quits?


If you only see 1/4 to 1/2 inch, that may be below the fuel pick up tube. You may just have to shut down and fill the tank more often.|||When the engine quits, check for spark at the spark plugs. If no spark; could be the coil or ignition module.|||I may be crazy, but not quite as crazy as the other few.





Sticky valve. Just needs that extra pressure.





Drain. Clean. Repeat.|||check the carter key under the pull cord pull off pully to get to pointson side shaft has a key half moon