1990 Johnson Evinrude "ES" 40 thru 55, P/N 507872, Page 203Get this manual
Place the long bearing on the installer tool with lettered side of the bearing facing the tool Insert the tool with the bearing into the gearcaseDrive the bearing in the gearcase until installer tool contacts the gearcaserJl 6Install the clutch dog on the propeller shaft with end marked PROP END to the rear, and shifter hole of the clutch dog and propeller shaft slot aligned18635
7Wear safety glasses to avoid personal injury when servicing the detentInsert two detent balls in detent hole of the shifter shaft