1992 Johnson Evinrude "EN" 9.9 thru 30 Service Manual, P/N 508142, Page 96Get this manual
Disassembly
ill speed orifice using OMCFixed Jet ScrewdriverDrain fuel
into suitable container2Remove intermediate orifice 3Remove components of low speed adjustment needle 4Remove four screws retaining float chamber to carburetor body5Remove components of float and float valve assembly 6Remove nozzle gasket
I:A 1Remove primer nipple and gasket Remove high
7Refer to Cleaning and InspectionAll Models
Assembly
Before proceeding, be sure that all parts are perfectly cleanBe sure that all replacement parts match original ones in size and shapeReplace all gaskets, O-rings, and sealing washers each time you assemble carburetor1Install nozzle gasket