I am trying to get the lower gear case off of this 40 HP Super Sea Horse motor. I have the service manual and I'm close. I can't find where the shifter disconnects. There is a diagram referred to, but I can't find where to actually disconnect it. The extension and gear case have cleared about an inch and I can see two water tubes and another rod I thought was the drive shaft. I have a crack in the housing right at the propeller shaft and I want to check for any damage I might have cause.