1998 Johnson Evinrude "EC" 90, 115 SPL Service Repair Manual, P/N 520209, Page 56Get this manual

1998 Johnson Evinrude "EC" 90, 115 SPL Service Repair Manual, P/N 520209, Page 56

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Description of Outboard Fuel System

The fuel pump is of the diaphragm-displacement type and is operated by changes in crankcase pressureAlternately, suction and pressure in the crankcase