1994 Johnson/Evinrude "ER" 9.9 thru 30 outboards Service Manual, Page 83Get this manual
Carburetor Body
f4l 1Check all drillings and passages with syringe filled with isopropyl alcohol2Visually inspect all gasket surfaces for nicks or irregularities3Check for excessive throttle shaft playCheck for throttle valve misalignment4If necessary, remove the calibration pocket core plug to inspect the pocket for damage or restrictions: Drive small punch not more than through plug and pry outl S