1968 Evinrude Ski-Twin, Ski-Twin Electric 33 HP Outboards Service Manual, Page 17Get this manual
This vents the tank to the atmosphere and opens the fuel outletring seals in the fuel connectors shut off fuel flow when the line is disconnected from the tank or motorfacilitate draining and cleaning, drain screw has provided in the fuel tank upper housingSee Figure 3-4 REMOVAL OF CARBURETOR FROM MOTOR
Disconnect fuel line at carburetorSee Figure Remove throttle lever link removing lever pin at throttle arm3-5
Figure 3-6Intake Manifold
fRemove screw attaching leaf plate to crankcase and remove leaf valve assembly, and gasketSee Figure 3-6
DISASSEMBLV OF CARBURETOR
Remove screwplug from bottom of float chamber to drain carburetorSee Figure 3-7Figure 3-5Carburetor Linkage Fuel Connection