1996 Johnson Evinrude "ED" 9.9 thru 30 2-Cylinder Service Repair Manual, P/N 507122, Page 74Get this manual
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Carburetor Cleaning and InspectionAll Models Cleaning
Use clean bristle brush to remove gum or varnish deposits
Blow dry with shop air of not more than 25 PSI (172 kPa) When drying passage