1990 Johnson Evinrude 120 thru 140, 185 thru 225, 300 HP, P/N 507875, Page 97Get this manual
1191 3Install side cover with new gasket and torque screws to 18-24 inIbs(2-3 Nm) 4Install new float chamber gasket on the main body5Install float valve seat in float chamber6Clip float valve to floatValve clip must face chamber port sideInstall float assemblyTighten hinge pin retaining screw securelyAdjust float height with chamber invertedFloat must be level with gasket surface '32 in(0,8 mm)If adjustment is required, do not put pressure on float valve and seat8Install high speed fuel orifice with OMC Driver PIN 317002 and install float chamber plugTorque plug to 30-35 inIbs(3-4 Nm)
9Install float chamber and retaining screwsBack up screws in their holes to engage original threadsTorque screws in sequence to 18-24 inIbs(2-3 Nm)1231 10Install new O-ring seal and attach main body to throttle bodyTorque mounting screws in "X" pattern to 45-55 inIbs(5-6 Nm)6764