1993 Johnson Evinrude "ET" 9.9 thru 30 Service Manual, P/N 508282, Page 79Get this manual
Carburetor Body
f41 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 in(3 mm) through plug and pry out Install new core plug with the convex side upSeat the plug using flat end punch and plastic malletApply Gasoila sealer to the rim of the core plug after it is seated5If necessary, remove the lead shot to inspect passage for restrictions or leaks: Gently pry up on lead shot with sharp edged tool Install new lead shotFlatten shot with flat end punch and plastic malletCheck for leakage1sl 6Check for leaks between emulsion pickup tube and carburetbody: Invert carburetor body and fill idle circuit with isopropyl alcohol Check for leaks at point If leak occurs, blow dry and apply drop of OMC Ultra Lock at point