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 in crankcase pressureAlternately, suc-
["":;1 1The fuel pump is of the diaphragm-displacement type and is