hello guys this is my first time posting i have a byers zero turn lawn mower it has a kolher command 22 engine on it here is my issue it will start and run fine for maybe 15 minutes then it will sputter then die out unless i pull the choke and even then ti is a matter of seconds untill it dies im out of ideas here is a list of some of the things that i have done to fix....
pulled fuel thanks and cleaned
ran with gas caps off to elimnate the possabillaty of bad cap vent
new air filter and oil change (i do once a year)
checked grounds and wires to make sure everything is connected properley
checked for spark and replaced plugs
anyone else ran into this problem...... i work on alot of cars but im not a master of the small engine i would just someone to point me in the right direction.....thanks