Johnson/Evinrude V6 Gearcase Removal
Avoid accidental starting of engine. Twist and remove all spark plug leads before beginning service. Disconnect battery cables at the battery.
Rotate the propeller shaft and shift the gearcase to REVERSE position. Remove the shift rod screw A. 
Note where the index mark B on the gearcase aligns with the index number C of the adjustable trim tab so that the trim tab can be reinstalled in the same position. Remove the screw D and the trim tab. 
Using a 5/8 in. thin wall socket, remove the screw E with the lock washer. 
Using a 9/16 in. socket, remove screw F. 
Remove the four gearcase retaining screws. 
Remove the gearcase assembly from the exhaust housing, being careful not to bend the shift rod. The lower inner exhaust housing may come out with the gearcase. Secure the gearcase in a suitable holding fixture.