1990 Johnson Evinrude "ES" Cross V 88 thru 115, 150 thru 175, P/N 507874, Page 80Get this manual
Carburetor Inspection Cleaning Never clean carburetor by submerging or soaking in hot tank or carburetor cleaner Do not expose plastic or rubber parts to any carburetor cleaner1Before inspection, all carburetor components must be perfectly clean Carburetor must be completely disassembled Clean parts with mild aerosol solvent Use clean bristle brush to remove gum or varnish deposits Blow dry with shop air of not more than 25 PSI (172 kPa)Float Valve Assembly