by Ianfs » 27 Jun 2015, 10:07
A block of wood something like 4x2 ish in between the prop and the ventilation plate to hold the prop (don't put it in gear) a breaker bar or similar, a large socket, can't remember the size and bingo. Obviously you will have to bend back the fixing washer. You might find the thrust washer comes off with the prop. Have you got some 2-4-C grease or similar prop grease?
Also you'll have to check the torque which I think should be 50ft lbs but be careful to check some say 100ft lbs but I think Mercruiser changed to 50.