1995 Johnson/Evinrude Outboards 25, 35 3-Cylinder Service Manual, Page 57Get this manual

1995 Johnson/Evinrude Outboards 25, 35 3-Cylinder Service Manual, Page 57

Description of Fuel System 1The two fuel pumps are of the diaphragm-displacement type and are operated by changes in crankcase
three carburetors INote The fuel pumps are different and react differently to crankcase suction and pressure pulsesThey must
not be interchanged as inadequate fuel and oil will reach the engine causing poor performance and possible powerhead failure
rn 2Thecontrol enginemeter the fuel to their individual cylincarburetors dersThey speed and power output by varying the intake