1998 Johnson Evinrude "EC" 2 thru 8 Service Manual, P/N 520202, Page 62Get this manual
4Check all carburetor body drillings and passages with syringe filled with isopropyl alcoho lt
5Visually inspect all gasket surfaces for nicks or irregularities6Check for excessive throttle shaft playCheck for throttle valve misalignment7If necessary, remove the calibration pocket core plug to inspect the pocket for damage or restrictions:
W Drive small punch not more than 1!s in(3 mm) through
plug and pry out Install new core plug with its convex side upSecurely flatten plug with flat end punch and plastic malletApply Gasoila sealer to the rim of plug8If necessary, remove the lead shot to inspect passage for restrictions or leaks: