On Thursday, April 9, 2015 at 1:17:15 PM UTC-5, wrote:
I have a troy bilt horse xp with a Kohler 22hp engine sv620 it will only start if i use starter fluid. i left old gas on the tank so i drained the tank and sprayed it out with ether and bleed the fuel lines to the carb i also removed the diaphragm and sprayed it out with ether.

Did you buy fresh gas...or are you trying to start it with stale gas?