1970 Evinrude Ski-Twin, Ski-Twin Electric 33 HP Service Manual 4687, Page 16Get 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 cleaningdrain screw has been provided in the fuel tank upper housingSee Figure 3-4 REMOVAL OF CARBURETOR FROM MOTOR
aDisconnect fuel line at carburetorSee Figure 3-5 Remove throttle lever link by removing lever pin at throttle arm
Figure 3-6Intake Manifold
fRemove screw attaching leaf plate to crankcase and remove leaf valve assembly, and gasketSee Figure 3-6
DISASSEMBLY OF CARBURETOR
aRemove screw plug from bottom of float chamber to drain carburetor See Figure 3-7Figure 3-5Carburetor Linkage and Fuel Connection