1998 Johnson Evinrude "EC" 25, 35 HP 3-Cylinder Outboards Service Manual, Page 67Get this manual
Carburetor Body
1Check all drillings and passages with syringe filled with isopropyl alcohol
2Visually inspect all gasket surfaces for nicks or irregularities3Check for excessive throttle shaft playCheck for throttle valve misalignment
rn 4Check for leaks between emulsion pickup tube and carburetor body: