The hex socket adjuster thru the air filter cover. very small adjustments, take notes. Use masking tape to mark your starting position. Forget any dweeb that tells you not to monkey with it. This is the fuel air ratio adjustment to die for. It holds open the plenum to the adjusted amount.


You must depress the spring and feel that you are engaged before twisting or you won't have a clue how much you are adjusting.

Are you familiar with this or do I need to dig up diagrams?