CaptRon, been there done that! Like every one else has said, you'll want to find those blades. I also recommend hanging the key on the seacock. Key has lived there since I learned my lesson.
Also IIRC Yanmar recommends having the valves adjusted after overheating the engine. Took about an hour on my 3GM for the mechanic to do it & truth be told he said the clearance on the valves was okay but, better safe than sorry.
PS I commend you for having a spare pump
. They are a b%^ch to replace while at sea.