1993 Johnson Evinrude "ET" 40 thru 55 Service Manual, P/N 508283, Page 98Get this manual
f211 6Install equalization hose between carburetors and secure with tie strap7Connect drain hose to air silencer base8Install new air silencer base to carburetor gasket and secure air silencer using new screws9Install air silencer cover using new gasket10Install air silencer screws and secure the air silencer cover11If the slow speed needle adjustment has been disturbed, refer to Carburetor Mixture AdjustmentAll Models Carburetor Mixture AdjustmentAll Models
The slow speed mixture in this carburetor is controlled by factory adjusted needleThis procedure should only be used if the factory seal is gone or if the needle adjustment has been disturbed22 1Make reference mark on the adapter sleeve before you disturb the needle adjustment