Johnson Evinrude Outboard Motors 1956-1970 1.5-40hp repair manual., Page 331Get this manual
ELECTROMATIC SHIFT
33- Install the Woodruff key into the recess in the driveshaftSome models may use pinIf the pin is used, insert it into the hole in the driveshaftSlide the NEW impeller down the driveshaft with the slot in the impeller aligned with the Woodruff key or the pin, if pin is usedContinue to work the impeller down the driveshaft until it is resting on the surface of the water pump plate34- Check to be sure NEW seals and 0rings have been installed in the water pumpLubricate the inside surface of the water pump with light-weight oilLower the water pump housing down the driveshaft and over the impellerRotate the driveshaft CLOCKWISE as the water pump housing is lowered to allow the impeller blades to