1975 Evinrude 40 HP Outboards Service Manual, PN 5093, Page 21Get this manual
This vents the tank to the atmosphere and opens the fuel outlet"0" ring seals in the fuel connectors shut off fuel flow when the line is disconnected from the tank or motorTo facilitate draining and cleaning, drain screw has been provided in the fuel tank upper housingSee Figure 3-4 REMOVAL OF CARBURETOR FROM MOTOR
aDisconnect fuel line at carburetorRemove low speed arm and link from low speed needleRemove choke link from choke leverSee Figure 3-5
If choke link screw is removed, manual choke
must be re-adjusted so choke opens and closes fully
NOTE Figure 3-6Intake Manifold dRemove cut-out switch hose from intake manifoldRemove eleven screws attaching intake manifold to power headSee Figure 3-6Remove intake manifold from power headeRemove screw attaching leaf plate to crankcase and remove leaf valve assembly, and gasketSee Figure 3-6