1998 Johnson Evinrude "EC" 90, 100C, 105C, 115, 150, 150C, 175 60 deg. LV Service Manual, P/N 520210, Page 97Get this manual
8Remove the intermediate air-bleed orifice with OIVIC Ori fice Plug Screwdriver, PIN 317002Remove the float cover plug with large flat blade screwd river
10Remove the high speed fuel orifice with OMC Orifice Plug Screwdriver, PIN 317002
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11Remove slow-speed mixture needle and springInspect the needle for nicks or damage12To remove the fuel manifold from the throttle body, remove the three screws and clamps
Inspection
1Inspect carburetor main body and float bowl: Gasket surfaces must be smoothno nicks or irregularities All nozzles and pickup tubes must be securely in place All metal orifice inserts must be securely in place