1995 Johnson/Evinrude Outboards 40 thru 55 2-Cylinder Service Manual, Page 66Get this manual
Description of Fuel System tion and pressure in the crankcase are transmitted to the pump diaphragm L!J operated by changes
correctly to wide range of operating conditions, the carburetors have multiple fuel mixing circuits f31 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"