Small Engines (Lawn Mowers, etc.): Craftsman tractor wont stay running, brigs and straton, new tank

Question
  I have a cratsman tractor Mod# 917.270532 14.5 Brigs and Straton OHV IC Gold. After changing spark plug and new tank of gas because it sat for a year and a half it would start but if I try to engage mower, let off clutch, or off seat it shuts off. It like the engine boggs down it seems to be electrical. Any ideas?

Answer
 Hello Tom:

 Check the Blade Safety Switch. Are you Sure it is Not the Carburator Not getting enough Gas to Run Under a Load? From the Way you explained the Operation of the Mower it Really sounds like the Carburator Requires a Good Cleaning and Overhaul. If it Set for a Year and a Half, Clean and Overhaul the Carburator First. If you Need to see any of your Mower Broken Down, got to http://www3.sears.com/ and follow the Directions to View All the Parts Breakdowns. Hope this Helps. Let me know what Happens.

 Good Luck

 Respectfully

 John