1968 Evinrude Ski-Twin, Ski-Twin Electric 33 HP Outboards Service Manual, Page 16Get this manual
Figure 3-3Fuel 5 84
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FUEL Figure 3-2Leaf Valve Assembly LEAF VALVES The leaf valves time the injection of the fuel mixture into the crankcase opening only when the pressure in the crankcase has dropped to predetermined point the compression strokeSee Figure 3-2The fuel tank is non-pressurized, suction operated tankFuel is lifted from the tank to the carburetor the fuel Priming is achieved squeezing
CONNECTOR HOUSING