Could someone please share their experience in the de-carb procedure for a 112 SPL Evinrude. I bought a can of OMC Engine Tuner and was reading the procedure on the can which will follow tomorrow however i do not know about this valve and which position the lever should be in during normal operation and during de-carb. Right now the level is inboard or fully clockwise. What does this level do and what position should it be in??? Any other useful info concerning a decarb would be appreciated. Thanks