Vent screw us open. I've drain the oil.The driveshaft simply slips back into the pinion gear.----This should be simple.------But you have to release air pressure at the upper vent screw.
Omg. Just found the problem. Impeller key fell in there. Thank you everyone. And thanks you Mat!! He asked me to check in the hole and there ut was. I am so dumbVent screw us open. I've drain the oil.