Small Engines (Lawn Mowers, etc.): 1998 craftsman 19.5 hp riding mower, carburator, needle valve

Question
mower will start and run for about 30 secounds and then carb. will shoot gas out and die. i rebuilt the fuel pump and installed a new needle valve under float and it still does the same thing. please help

Answer
 Hello David:

 Did you Soak the Carburator Overnight in Cleaning Solution(gunk carburator cleaner) and then Blow Out all the Passages with Compressed Air? From your Description it Sounds like the Carburator is Still Dirty. Send me the Make, Model, Type and Code Numbers Off of the Engine, Please. With these Numbers I can Locate a Breakdown/IPL of the Engine and Better Assist you. Hope this Helps. I am here if you Require more Assistance. Let me know what Happens, Please. Thanks.

 Good Luck

 Respectfully

 John