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		#1
		
		
			B 
		
		
		BigRed1958
		
		
			2011 17.5 HP Briggs governor causing engine to run intermittent
Revv. Up and down but smooths out momentarily when choke applied
		 
		
		
	 
	
	
		#2
		
		
			
 
		
		
		pugaltitude
		
		
			Dont think it will be anything to do with governor but carb.
Strip down, clean and rebuild carb and fuel system.