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		Aug 2, 2018 #1 
		
		
			W  
		 
		
		wildbill1
		
		
			I came across a NOS Jacobsen 2 cycle engine. The tag says "ENGINE NUMBER 5J 501261". Anyone know what it is for? Google isn't coming up with anything.
		 
		
		
	 
	
	
		Aug 2, 2018 #2 
		
		
			 
		
		Russ2251
		
		
		
		
	 
	
	
		Aug 3, 2018 #3 
		
		
			W  
		 
		
		wildbill1
		
		
		
		
	 
	
	
		Aug 3, 2018 #4 
		
		
			 
		
		Russ2251
		
		
			Don't know for sure, but appears to be a vertical (or rotary) version of a model j-321.
		 
		
		
	 
	
	
		Aug 4, 2018 #5 
		
		
			W  
		 
		
		wildbill1
		
		
			
	
		
	
	
		
		
			Don't know for sure, but appears to be a vertical (or rotary) version of a model j-321.
		
	 
 
Any idea what a brand new one is worth? I have no use for it. 
I used to have a 20" commercial Jacobsen walk behind mower and I picked up the engine for a spare. The mower was stolen and I never used the new motor.
 
		
		
	 
	
	
		Aug 4, 2018 #6 
		
		
			 
		
		Russ2251
		
		
			
	
	
		
		
			Any idea what a brand new one is worth?
		
		
	 
 Probably not much.
I purchased a NOS short block on Ebay a couple years ago for $35 delivered.
I use it to power a '60's Fox Doodlebug.