Could anyone tell me the correct procedure to adjust the clutch on this cycle and also the settings for the mixture screw and which one is the mixture vs. the idle screw as when I turn either one there is no response so must be a problem some where in carb. Is there an on line manual anywheres as I don't have a manual on this or the 1968 CD 175 Honda which look to be the same engine except for the 175 is bored out to 174 cc.