i think the propeller on my 1964 35 hp merc is wrong it only has two blades?????
ive seen many smaller motors with three blades so im thinkin mine should be aswell!!!!!!
Older motors frequently came with two blade props. My 1963 Johnson has a two blade. My friends 1959 had a two blade till he broke it and replaced it with a three blade. The motor ran pretty much the same.