Re: 85 hp 1975 evinrude v4 impeller
You don't have to remove the carburetor, but it would make it easier to reach. You should, however, disconnect and move the the control cables out of the way.
You loosen the fulcrum screw on the bellcrank, then spread the fingers of the bellcrank to release the pin.
Click the thumbnail.
Note the position of the barrel swivel at the top of the shift rod: the flat side faces the driveshaft. Be sure that it is that way when replacing the unit.