1990 Johnson Evinrude "ES" 60 thru 70 Service Manual, P/N 507873, Page 85Get this manual
Carburetor Body f91 1Check all drillings and passages with syringe filled with
E!J isopropyl alcohol2Visually inspect all gasket surfaces for nicks or irregularities3Check for excessive throttle shaft playCheck for throttle valve misalignmentr,Ql 4If necessary, remove the calibration pocket core plugs to inspect the pocket for damage or restrictions Drive small punch not more than 1a in(3 mm) through plug and pry outf11l 5If .ne.cessary, remove the lead shots to inspect passages for restrictions or leaks Gently pry up on lead shot with sharp-edged tool'12l 6Check for leaks between emulsion pickup tube and carburetor body Invert carburetor body and fill idle circuit with isopropyl alcohol Check for leaks at point If leak occurs, blow dry and apply drop of GMC Ultra Lock at point