1996 Johnson Evinrude "ED" 40 thru 55 2-Cylinder Service Manual, P/N 507124, Page 66Get this manual

1996 Johnson Evinrude "ED" 40 thru 55 2-Cylinder Service Manual, P/N 507124, Page 66

Description of Fuel System 1The fuel pump is of the diaphragm-displacement type and is operated by changes in crankcase pressureAlternately,
conditions, the carburetors have multiple fuel mixing circuits[]] 3The unit is combination mechanical fuel and oil pump,
powered by crankcase pressure and vacuum pulses, which responds to various engine power settings by injecting the proper
amount of oil into the fuel systempump incorporates circuit that warns the operator The of "NO OIL" situation4Mixture enrichment