where the fuel line plugs in to my 1986 johnson 40, there is another nipple that feeds into a black unit mounted next to the carburetors, that unit feeds into the carburetors. I'm told that unit is an oil injector. is that true and should i have an oil reservoir feeding that nipple. 
this motor is new to me and i have ordered a manual but have not received it yet.
			
			this motor is new to me and i have ordered a manual but have not received it yet.
 
                 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
 
		 
 
		 
 
		