1993 Johnson Evinrude "ET" 2 thru 8 Service Repair Manual, P/N 508281, Page 62Get this manual
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Description of Fuel System 2,2.3, 3.3
r:;J 1 The fuel pump is ofthe diaphragm-displacement type and is operated by changes in crankcase pressureAlternately, suction and pressure in the cr