Reassemble everything in the boat and lightly tighten the set screws. If you do not, tightening the set screws will cause a bur on the shaft that may make the flange impossible to remove later. Grease everything and reassemble permanently. Prop shaft stuffing box. Prop shaft flange is bolted to trans.
Orange hose is water to feed prop bearing.
Green stripe hose is water feed from sea strainer to engine. Silver hose is blower vent. Yellow is bilge pump, but not connected yet.