Small Engines (Lawn Mowers, etc.): riding mower, key switch, brake switch

Question
I have a poulan pro model#PD185H42st  ser#041304D003499 runs good with brake pushed in, when released it dies. I replaced the brake switch, key switch, seat switch checked every wire but want stay running. I allso replaced blade swicth. Out of ideas please help.    thanks Richard  

Answer
 Hello Richard:

 Sorry for the Delay. Remove the Engine Shutoff Wire from the Coil. Does the Engine Still Quit When you Release the Brake/Clutch? If Yes, then the Problem is the Carburetor. If No, then there is a Short in the Harness if the Switches Check Good. You can View a Breakdown/IPL at this Addy http://www.poulan.com/products/chainsaws.asp and Select Download Manuals. Enter the Model Numbers PD185H42STA. You can Download the Parts Manual and it will be in a Breakdown Form. Hope this Helps. I am here if you Require more Assistance. Let me know what Happens, Please. Thanks.

 Good Luck

 Respectfully

 John