B 18 B, B 18 D & B 20 B, Removal
Remove air cleaner. Disconnect throttle linkage, remove and plug fuel line(s) and vacuum lines to intake manifold. Disconnect exhaust pipe at manifold flange. Remove any electrical connections to manifold. Remove all connecting nuts and bolts and lift manifold off engine and out of vehicle.
NOTE:
If carburetors are to be removed, both carburetors must be lifted off manifold as a unit as intermediate shaft is carried in levers in throttle splines.