1974 Johnson 40 HP Outboard Motors Service manual, Page 19Get this manual
ALIGNING
RECESSES
Figure 3-2Leaf Valve Assembly LEAF VALVES The leaf valves time the injection of the fuel mixture into the crankcase by opening only when the pressure in the crankcase has dropped to predetermined point on the compression strokeSee Figure 3- 2
Figure 3- 3Fuel Pump and Filter FUEL TANK The fuel tank is non -pressurized, suction operated tankFuel is lifted from the tank to the carburetor by the fuel pumpPriming is achieved by squeezing