1990 Johnson Evinrude "ES" Colt/Junior thru 8 Service Manual, P/N 507870, Page 75Get this manual
Assembly
INote Before proceeding, be sure that all parts are perfectly cleanf61
Be sure that all replacement parts match original ones in size and shapeReplace all gaskets, O-rings, and sealing washers each time you assemble carburetor1Install and tighten the high-speed nozzle Install new float chamber boss gasket 2Replace float valve seat and gasketfloat valve and floathinge pin CD and spring clip in carburetor body
3Check for correct positioning of float levelFloat level controls the height of fuel in the float chamber and is very critical with regard to carburetor calibration and function Turn carburetor body upside down and hold so gasketsurface is horizontalThe weight of the float will close the float valve needleRest OMC Float Gauge PIN 324891 on gasket surface, and slide gauge up next to floatTop of float should be between notches on float gaugeBe certain gauge is not holding down the float If float level is not between the notches of gauge, lightly bend metal float arm to adjust levelBe careful not to force float needle valve into seat4Check for correct float drop dimensionThis dimension affects the full opening of the inlet needle and is critical to correct operation of the carburetorWith carburetor body in normal running position, the float must drop open to dimension shownTo adjust, bend tab on float arm where tab contacts float seat