Size of my prop shaft?

[flipcorp]

Hi - I need to replace my prop - does anybody know the size of prop puller I need for this? that is - I believe the size of my prop is 1 1/4 - is that the appropriate size I need for a prop puller?

1979 O'Day 37 with Yanmar 30HP inboard

thanks -Nick

 

[tcwaltz]

You should be able to get a caliper and measure inside the engine compartment

 

[flipcorp]

smart. didn't think of that. thanks