Look at the top picture. Just below the carb opening at about the 5 o'clock position (partially covered by the brake linkage) is the idle speed screw. If you screw it in.....clockwise.....the idle speed increases. I think you can guess what hppens if you screw it out, the barrel closes off.


You also have some linkage mechanical adjustment to do because at neutral you already have the throttle/brake over ride spring fully compressed.

Ed M.