Tuning Mikuni HSR 42

Discussion in 'Softail Models' started by Piotra, Apr 7, 2011.

  1. Piotra

    Piotra Active Member

    106
    26
    0
    Hello
    I would like to tune Mikuni HSR 42 carburettor, especially fuel-air mixture. Of course I can do it by regulating air screw and listening if the idle is regular. But I can use an emission analyzer. The question is what values on the emission analyzer should I obtain for this carburettor to be sure that the air screw is corectly positioned.
     
  2. Jack Klarich

    Jack Klarich Expert Member

    18,544
    153
    399
    HSR MIKUNI Carb Tuning - Harley Davidson Community hope this sheds some light
     
  3. Hoople

    Hoople Account Removed

    7,198
    0
    34
    Here is a link that will convert % of carbon monoxide to an air fuel ratio when using Infra-Red absorption.

    VW Corrado World: Library: CO% to Air Fuel Ratio (AFR) Table